ZeroHour

Search: “hvnc”

31 stories

Smart search ranks by meaning as well as keywords (one row per story, last 45 days).

Dutch NCSC: Critical Check Point VPN flaws exploitation is imminent

Dutch NCSC warns exploitation is imminent for critical Check Point VPN RCE flaws CVE-2026-85102 and CVE-2026-85103, urging immediate patching of Security Gateways.

The Dutch NCSC assesses the likelihood and impact of exploitation as high for two critical Check Point VPN flaws, though no public PoC exploit has been reported. CVE-2026-85102 is improper validation of certificate data during VPN negotiation, and CVE-2026-85103 is a heap overflow in the VPN certificate ASN.1 decoder; both enable remote code execution on Security Gateways, the latter also on Security Management Servers. Affected releases span R81.20, R82, R82.10, R81.10.x, R82.00.x and EoS versions R80 through R81.10, while R82.20 is unaffected. Check Point shipped fixes on September 9 via LivePatch Take 24 and Jumbo Hotfix Accumulator takes, and NCSC advises restricting Site-to-Site VPN rules to trusted IPs.

BleepingComputerupdated · 8h agofirst · 4d agoVulnerability 9 sourcesCVE-2026-85102CVE-2026-851032

Cisco FMC CVE-2026-20079 Actively Exploited

Cisco confirms active exploitation of CVE-2026-20079, a maximum-severity authentication bypass in Secure Firewall Management Center.

Cisco has confirmed that CVE-2026-20079, a critical authentication bypass in Cisco Secure Firewall Management Center (FMC), is being actively exploited in the wild. The vulnerability carries a maximum CVSS severity, and defenders are urged to treat it as an urgent patch priority. FMC centrally manages Cisco Secure Firewall deployments, so exposure across enterprise environments is likely.

SOCRadarupdated · 2d agofirst · 6d agoExploit / PoC in the wild 9 sourcesCVE-2026-20079

Cisco Secure Firewall Management Center Software Vulnerabilities

Cisco Secure Firewall Management Center vulnerabilities could let remote attackers gain root access and perform session forgery or impersonation.

Cisco disclosed multiple vulnerabilities in Secure Firewall Management Center (FMC) Software that could allow a remote attacker to gain root access and perform session forgery or session impersonation. Software updates have been released and no workarounds address the issues. The advisory is part of Cisco's September 2026 grouped release of firewall product advisories.

Cisco Security Advisories · 9h agoAdvisory 7 sources

HVNC Backdoor Targets LATAM Organizations with Fake Tax and DocuSign Lures

A custom HVNC backdoor is targeting Latin American financial organizations via fake DocuSign and NFe tax-document lures, giving attackers hidden persistent remote access.

ANY.RUN researchers analyzed a multi-stage phishing campaign delivering a custom HVNC backdoor to banking and financial organizations in Latin America. The chain starts with fake DocuSign and NFe tax-document pages that serve per-visitor ZIP archives, followed by an LNK dropper, an NSIS loader, and a 64-bit backdoor masquerading as Windows Update Assistant. The implant provides hidden remote desktop control, keystroke monitoring, Firefox data theft, Startup-folder persistence, and EDR-aware behavior, communicating over TCP/27015.

ANY.RUN · 8d agoMalware in the wild

HHS Releases Updated Security Risk Assessment Tool

HHS OCR and ONC released version 3.7 of the Security Risk Assessment Tool for healthcare organizations.

The U.S. Department of Health and Human Services Office for Civil Rights (OCR) and the Office of the National Coordinator for Health IT (ONC) released version 3.7 of the Security Risk Assessment (SRA) Tool. The tool helps covered entities conduct HIPAA security risk assessments. ONC and OCR provided guidance on the updates.

DataBreaches.net · 3d agoTools

Risky Bulletin: Slovakia finds Russian backdoor in traffic speed cameras

Slovakia's NBU found an SMS-triggered backdoor in Russian-made NERO R-ONE traffic cameras, pausing a 279-unit deployment.

Slovakia's national security service NBU issued an alert against NERO R-ONE high-speed traffic cameras after finding a backdoor that grants shell and network access via SMS from hardcoded Russian phone numbers. The cameras are a rebranded version of the Russian CORDON PRO.M model by St. Petersburg firm Semicon, purchased via a Cyprus shell company under a €30 million EU-funded project. The report also found SecureBoot disabled, vulnerable web management, and unauthenticated live streams; the Interior Ministry paused deployment of 279 cameras pending independent assessment.

Risky Business News · 28d agoThreat actor in the wild1

ISC BIND security advisory (AV26-931)

Canadian Cyber Centre relays ISC advisory on vulnerabilities affecting multiple BIND 9 branches; administrators should review the matrix and apply updates.

On September 16, 2026, the Canadian Centre for Cyber Security (AV26-931) relayed ISC's advisory on vulnerabilities affecting ISC BIND 9 versions prior to or equal to 9.18.50, 9.20.27, and 9.21.25, including their -S1 variants. No specific CVE identifiers or exploitation details are provided in the bulletin. Administrators are directed to ISC's BIND 9 Software Vulnerability Matrix and encouraged to apply updates as they become available.

Canadian Centre for Cyber Security · 6h agoAdvisory

PAPERMILL Malware Campaign Abuses Signed Notepad++ to Deliver VenomRAT to Windows Users

JUMPSEC tracks PAPERMILL, a China-nexus phishing campaign using a signed Notepad++ binary, libcurl.dll sideloading, and Donut loaders to deploy VenomRAT against Indian tax-audit targets.

PAPERMILL delivers ISO disk images via tax-audit phishing emails that passed SPF, DKIM, and DMARC, containing a renamed Authenticode-signed Notepad++ executable and a malicious libcurl.dll that proxies curl functions while executing loader logic in DllMain. The chain uses Mark-of-the-Web bypasses, anti-sandbox sleeps, UAC elevation prompts, Registry persistence, and a Donut shellcode loader to reflectively load .NET VenomRAT v6.0.3 with HVNC and credential-stealing capability, with C2 at 154.36.188.201:4449. JUMPSEC assesses the campaign as China-nexus, financially motivated, and Silver Fox-adjacent rather than definitively Silver Fox-operated.

GBHackersupdated · 13h agofirst · 16h agoMalware in the wild 2 sources

Orthanc DICOM Server

CISA advisory flags CVE-2026-87020, an integer overflow in Orthanc DICOM Server <1.13.0 causing heap out-of-bounds write and denial of service when decoding crafted PNG/JPEG images.

CISA published ICSMA-26-253-02 for Orthanc DICOM Server versions below 1.13.0, used in healthcare environments worldwide. CVE-2026-87020 (CWE-190) is an integer overflow in pitch and buffer-size computation causing a heap out-of-bounds write when decoding attacker-supplied PNG or JPEG images. An authenticated remote attacker can crash the Orthanc process and cause denial of service; CVSS v3.1 is 8.1 HIGH. CISA states no known public exploitation targeting this flaw has been reported.

CISA Advisories · 6d agoAdvisoryCVE-2026-87020

Extradited Russian Hacker Faces Charges Over Excel Malware Campaign That Infected Thousands

US DoJ charged extradited Russian Searzhudin Aktulaev for a 2016-2017 Excel macro campaign infecting ~80,000 freelance platform users with TVRAT and DarkVNC.

Searzhudin Tamirlanovich Aktulaev, 40, was arrested in Cyprus in May 2025 and extradited to the US on August 28, facing charges including wire fraud conspiracy and aggravated identity theft. The indictment alleges ~255 fake freelance-platform accounts were used to send Excel macro attachments to about 80,000 users in 2016-2017, deploying TVRAT (TeamSpy/TVSPY) and DarkVNC RATs for remote access and data theft. Thousands of infected machines called back to a US-hosted C2 domain, with stolen credentials and PII stored in the shared email account used in the scheme.

The Hacker News · 14d agoPolicy & legal

Xen Security Advisory 510 v3 (CVE-2026-79602) - x86: improper handling of HVM emulation return codes

Xen Project released XSA-510 (CVE-2026-79602) fixing mishandled HVM emulation return codes that let PCI-passthrough guests crash Xen.

Xen Security Advisory 510 v3 publicly discloses CVE-2026-79602, improper handling of HVM emulation return codes in the Xen hypervisor on x86. A guest with an assigned PCI device that has at least one BAR in the IO port space can trigger a BUG() in Xen. The advisory was released publicly as version 3.

Fake CVE-2023

A fake PoC for WinRAR RCE CVE-2023-40477 posted on GitHub actually deploys VenomRAT through a multi-step infection chain targeting researchers.

Four days after Zero Day Initiative publicly disclosed the WinRAR RCE vulnerability CVE-2023-40477 on August 17, 2023, an actor using the alias whalersplonk published a fake proof-of-concept on GitHub. The Python script actually repurposed public PoC code for GeoServer SQL injection CVE-2023-25157 and triggered an infection chain ending in VenomRAT. The README and an accompanying video lured users into running the script; the video drew over 100 plays. Unit 42 assesses the actor was opportunistic, targeting other miscreants adopting new vulnerabilities rather than researchers specifically.

Palo Alto Unit 42 · Aug 17, 2026MalwareCVE-2023-40477CVE-2023-25157

Broadcom Patches Critical VMware Workstation and Fusion VM

Broadcom patched critical VMware Workstation and Fusion VM-escape flaws CVE-2026-59346 (CVSS 9.3) and CVE-2026-59347 (CVSS 8.1); update to 26H1u1.

Advisory VMSA-2026-0007 fixes CVE-2026-59346 (CVSS 9.3), an integer overflow in the VMXNET3 virtual network adapter, and CVE-2026-59347 (CVSS 8.1), a stack-based buffer overflow in HGFS. A malicious actor with local administrative privileges inside a VM could execute code on the host in both cases. The flaws affect Workstation and Fusion 25H2 and 26H1 and are fixed in version 26H1u1 with no workarounds available. The bugs were reported independently by researchers working with Trend Micro Zero Day Initiative and by Tencent Xuanwu Lab.

Cisco confirms CVE-2026-20079 Secure FMC flaw exploited in attacks

Cisco confirmed active exploitation of CVE-2026-20079, a CVSS 10.0 authentication bypass enabling unauthenticated root command execution in Secure FMC; CISA added it to KEV.

Cisco confirmed in August 2026 that CVE-2026-20079 (CVSS 10.0), an unauthenticated authentication bypass in Secure Firewall Management Center, is being actively exploited, allowing remote attackers to execute scripts and commands as root via crafted HTTP requests to the web interface. CISA added the flaw to its Known Exploited Vulnerabilities catalog, ordering federal civilian agencies to patch by September 12, 2026. Shared IOCs, identical hot fixes, and a July 23 log entry suggest CVE-2026-20079 was used alongside the separately exploited static-credential flaw CVE-2026-20316 in the same attacks. Cisco released patches and cloud fixes, warns hot fixes do not remediate already-compromised devices, and says there are no workarounds.

BleepingComputer · 7d agoExploit / PoC in the wildCVE-2026-20079CVE-2026-20316

GDCM <= 3.2.7: six memory-safety and denial-of-service vulnerabilities, no CVE

Six memory-safety and denial-of-service flaws disclosed in the GDCM DICOM parsing library, affecting versions through 3.2.7.

Researcher Abhinav Agarwal disclosed six vulnerabilities in GDCM (Grassroots DICOM), an open-source C++ library for parsing and processing DICOM files. All six were confirmed against GDCM 3.2.6 using AddressSanitizer and UndefinedBehaviorSanitizer, and source review found the vulnerable patterns through version 3.2.7 and the upstream master snapshot. Potential impacts include heap corruption, process-memory disclosure, stack exhaustion, and process termination in applications parsing untrusted DICOM files. No CVE identifiers have been assigned at the time of disclosure.

oss-security · 6d agoVulnerability

CVE-2026-89775: Guest-to-Host Escape in KVM/arm64

Disclosed CVE-2026-89775 lets a guest VM escape to the host on KVM/arm64 systems with nested virtualization enabled.

Researcher Hyunwoo Kim disclosed CVE-2026-89775, a guest-to-host escape in KVM/arm64, after the embargo agreed with linux-distros maintainers expired. The root cause is a type truncation of the stage-1 walk level that makes a size computation return 0, the value meaning 'size unknown'. The VNCR pseudo-TLB invalidation path then interprets that 0 as a valid value on ARM64 hosts where nested virtualization is enabled.

oss-security · 9h agoVulnerabilityCVE-2026-89775

Three Critical VMware Flaws Allow Auth Bypass, Code Execution, and VM Escape

Broadcom patches three critical VMware flaws, including vCenter auth bypass CVE-2026-59309 and an ESX VM escape, urging immediate updates.

Broadcom issued emergency updates for VMware ESX, vCenter, Workstation and Fusion, fixing five flaws including CVE-2026-59309 (CVSS 9.8 authentication bypass in vCenter) and CVE-2026-59310 (CVSS 9.8 directory traversal allowing code execution). CVE-2026-47876 (CVSS 9.3) is an out-of-bounds write in the ESX VMXNET3 adapter that permits a virtual machine escape to the host. Broadcom found no evidence of exploitation, but Defused Cyber reported a spike in vCenter scanning on August 11, 2026 consistent with exploitation attempts against CVE-2026-59309 (VMSA-2026-0006). No workarounds are available.

Critical VMware Workstation and Fusion Flaw Lets VM Admins Execute Host Code

Broadcom patched two VMware Workstation and Fusion flaws, including critical integer overflow CVE-2026-59346 (CVSS 9.3), letting guest admins execute host code; no exploitation seen.

Broadcom released updates fixing CVE-2026-59346 (CVSS 9.3), an integer-overflow vulnerability allowing a malicious actor with local administrative privileges on a VM with a VMXNET3 adapter to execute code on the host, and CVE-2026-59347 (CVSS 8.1), a stack-based buffer overflow in HGFS allowing code execution as the host's VMX process. Both flaws affect VMware Workstation and Fusion 25H2 and 26H1, have no workarounds, and are fixed in Workstation 26H1u1 and Fusion 26H1u1. No in-the-wild exploitation has been observed, though VMware vCenter flaws CVE-2026-59309 and CVE-2026-59310, the latter suspected of China-nexus APT use, have recently breached 361 unique victim IPs across 47 countries.

Dell security advisory (AV26-843)

Canada's Cyber Centre issued advisory AV26-843 covering Dell vulnerabilities requiring updates across Alienware, PowerScale, PowerStore, and other products.

The Canadian Centre for Cyber Security published advisory AV26-843 on August 24, 2026, noting Dell products affected by vulnerabilities as of August 17, 2026. Affected products include Alienware Command Center prior to 6.14.20.0, Dell Command Update prior to 5.7.1, Dell Networking OS10 prior to 10.5.6.14, PowerScale OneFS prior to 14.1, PowerStore OS prior to 5.0.0.2, OpenManage Enterprise prior to 4.7.0, ObjectScale prior to 4.3.0.1, Metro Node prior to 4.6.0.4, and others. Users are directed to apply the vendor's updates.

Canadian Centre for Cyber Security · 23d agoAdvisory

OPCFoundation OPC UA LocalDiscoveryServer (LDS)

CISA warns CVE-2026-77477 (CVSS 4.6) lets local attackers hijack a privileged console during OPC UA LDS installation below version 1.04.420.

CISA published ICSA-26-246-01 for CVE-2026-77477, CWE-250 execution with unnecessary privileges in OPC Foundation UA-LDS-Installers below 1.04.420. An attacker able to launch the installer with elevated privileges and access the keyboard and display can intercept a high-privilege console window during installation and run arbitrary commands. CVSS 3.1 score is 4.6, the issue is not remotely exploitable, and no public exploitation has been reported. Lukas Schumaker of Rockwell Automation reported the flaw to OPC Foundation.

CISA Advisories · 13d agoAdvisoryCVE-2026-77477

Dell security advisory (AV26-886)

Canada's Cyber Centre flags September 2026 Dell vulnerabilities across iDRAC9/iDRAC10, OpenManage, PowerEdge, Avamar, NetWorker VE, PowerProtect, IDPA and PowerScale OneFS.

Canadian Centre for Cyber Security advisory AV26-886 lists Dell vulnerabilities across iDRAC9, iDRAC10, OpenManage Network Integration, PowerEdge servers, the OpenManage Python SDK, Avamar, NetWorker Virtual Edition, PowerProtect DP Series, IDPA and PowerScale OneFS. Fixed versions include iDRAC9 7.30.10.50, iDRAC10 1.30.30.50 and OpenManage Network Integration 3.10. No CVE identifiers or exploitation status are provided; administrators are urged to apply the vendor updates.

Canadian Centre for Cyber Security · 8d agoAdvisory

Cisco security advisory (AV26-197) – Update 3

CISA added Cisco CVE-2026-20079 to its KEV catalog; the Canadian Cyber Centre urges updates across Secure Firewall ASA, FTD, FMC, and SCC products.

The Canadian Centre for Cyber Security updated advisory AV26-197 covering March 2026 Cisco advisories for Security Cloud Control, Secure Firewall Management Center, ASA, and FTD. Cisco confirmed CVE-2026-20131 was actively exploited on March 18, 2026, and CISA added it to KEV on March 19. In Update 3, dated September 9, 2026, CISA added CVE-2026-20079 to the KEV catalog. The underlying flaws include FMC authentication bypass and remote code execution, ASA TCP-flood denial of service, and ASA/FTD IPsec denial of service.

OpenVPN security advisory (AV26-889)

Canada's Cyber Centre advisory AV26-889 flags CVE-2026-84732 in OpenVPN 2.6.22 and earlier and 2.7.6 and earlier, urging administrators to apply updates.

The Canadian Centre for Cyber Security issued advisory AV26-889 noting that OpenVPN versions up to and including 2.6.22 and 2.7.6 are affected by CVE-2026-84732. The flaw involves unbounded TLS timeouts and acknowledgements for non-outstanding packets in the reliability layer. Administrators are encouraged to review the linked OpenVPN guidance and apply updates as they become available. No exploitation is reported.

CVE-2026-72524: Apache Doris: Authorization bypass allowing a low-privilege user to read/write/drop arbitrary tables

Apache Doris authorization bypass CVE-2026-72524 lets authenticated low-privilege users read, write, or drop arbitrary tables in affected 3.1.x through 4.1.3 versions.

CVE-2026-72524 is an incorrect authorization vulnerability in Apache Doris rated important, allowing an authenticated low-privilege user to bypass privilege checks and read, write, or drop arbitrary tables. Affected versions include Apache Doris 3.1.0 through 3.1.*, 4.0.0 through 4.0.7, and 4.1.0 through 4.1.3. The flaw permits access to or modification of data the user is not authorized to touch.

oss-security · 2d agoVulnerabilityCVE-2026-725241

CVE-2026-73579: Apache Syncope: Non-recursive Any search could skip Realms restrictions

Apache Syncope non-recursive Any search can skip Realms restrictions, exposing objects outside an administrator's authorized realm (CVE-2026-73579).

CVE-2026-73579 is an incorrect authorization vulnerability in Apache Syncope where non-recursive Any search requests are transformed in a way that skips Realms restrictions, returning objects outside the administrator's authorized realm. Affected component is syncope-core-persistence-common 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, and 4.1.0-M0 through 4.1.2. Apache rates the issue moderate severity.

oss-security · 2d agoVulnerabilityCVE-2026-73579

Cisco Secure Firewall Management Center Software Authentication Bypass Vulnerability

Cisco warns of a critical authentication bypass in Secure Firewall Management Center that lets unauthenticated attackers execute scripts and obtain root access.

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software allows an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. The flaw stems from an improper system process created at boot time and is triggered via crafted HTTP requests. If the FMC management interface does not have public internet access, the attack surface is limited.

ISC has disclosed fourteen vulnerabilities in BIND 9 (CVE-2026-19033, CVE-2026-19662, CVE-2026-19666, CVE-2026-19667, CVE-2026-19668, CVE-2026-19941, CVE-2026-75029, CVE-2026-76163, CVE-2026-77119, CVE-2026-77692, CVE-2026-78301, CVE-2026-80274, CVE-2026-81563, CVE-2026-81736)

ISC discloses fourteen vulnerabilities in BIND 9 DNS software, including a use-after-free, with fixes now available.

On September 16, 2026, Internet Systems Consortium disclosed fourteen vulnerabilities affecting BIND 9, listing CVE-2026-19033, CVE-2026-19662, CVE-2026-19666 (use-after-free), CVE-2026-19667, CVE-2026-19668, CVE-2026-19941, CVE-2026-75029, CVE-2026-76163, CVE-2026-77119, CVE-2026-77692, CVE-2026-78301, CVE-2026-80274, CVE-2026-81563, and CVE-2026-81736. Details and fixes are published in the ISC knowledge base. No active exploitation is reported in the announcement.

Mitsubishi Electric CNC Series (Update A)

CISA's updated ICS advisory details CVE-2025-2399, an out-of-bounds read in Mitsubishi Electric CNC series that lets a remote attacker cause a denial-of-service condition.

CISA released Update A of ICS advisory ICSA-26-078-05 covering Mitsubishi Electric CNC series controllers. The vulnerability CVE-2025-2399 is an out-of-bounds read that a remote attacker can exploit to trigger a denial-of-service condition. Affected products include M800VW, M800VS, M80V, M80VW, M800W, M800S and M80 series controllers up to specified firmware revisions. No exploitation is reported in the advisory.

CISA Advisories · 20d agoAdvisoryCVE-2025-2399

CVE-2026-19490: Critical Vulnerability Affecting Citrix NetScaler ADC and NetScaler Gateway

CVE-2026-19490 is a critical unauthenticated authentication bypass in Citrix NetScaler ADC and Gateway, remotely exploitable without user interaction.

An advisory published August 19, 2026 describes CVE-2026-19490, a critical authentication bypass affecting Citrix NetScaler ADC and NetScaler Gateway. The flaw carries a CVSS v4.0 base score of 9.3 and is remotely exploitable by unauthenticated attackers over the network without user interaction or elevated privileges. NetScaler ADC and Gateway are widely deployed enterprise products positioned at or near the network perimeter, providing load balancing, SSL/TLS offloading, and secure remote access. The text does not state whether exploitation has been observed in the wild.

Rapid7 Blog · 28d agoVulnerabilityCVE-2026-194901

[Control Systems] Siemens security advisory (AV26-890)

Canada's Cyber Centre relayed a Siemens advisory affecting Reyrolle 7SR5, Teamcenter, Siveillance Control, Desigo CC and other products.

Advisory AV26-890, dated September 8, 2026, flags Siemens vulnerabilities in Reyrolle 7SR5 (versions prior to V2.70), Teamcenter, Siveillance Control, SIMATIC AX Runtime, Desigo CC, Industrial Edge Management, and SIMOVE Fleetmanager and SIPLANT across multiple versions and models. The Cyber Centre encourages users and administrators to review the Siemens advisory and apply available updates. No specific CVEs or exploitation details are provided in the relayed advisory.

Canadian Centre for Cyber Security · 8d agoAdvisory