Source: CERT-EU Advisories

10 stories

Check Point issued emergency hotfixes for two CVSS 9.8 flaws (CVE-2026-85102, CVE-2026-85103) enabling unauthenticated RCE on VPN-enabled gateways.

On 9 September 2026, Check Point released emergency security updates for CVE-2026-85102 (improper certificate-data validation in VPN negotiation) and CVE-2026-85103 (heap overflow in VPN certificate ASN.1 decoding), both CVSS 9.8, allowing unauthenticated remote code execution. The flaws affect Security Gateway, Security Management Server, and Spark Firewall deployments configured with Remote Access or Site-to-Site VPN, spanning versions R80 through R82.10. CERT-EU advisory 2026-012 urges immediate hotfix application, prioritizing internet-facing and perimeter appliances.

CERT-EU Advisoriesupdated Sep 14, 09:43 UTC · 1d agofirst Sep 10, 08:36 UTC · 5d agoVulnerability 9 sources CVE-2026-85102 CVE-2026-85103

2026-011: Critical Vulnerabilities in SAP Kernel and NetWeaver Message Server

SAP patched two critical flaws, OVERPASS (CVE-2026-44756, CVSS 10.0) and S4GET (CVE-2026-58240), allowing unauthenticated attackers to execute OS commands on SAP hosts.

On SAP's September 2026 Security Patch Day, SAP released Security Notes 3747649 and 3759472 fixing two critical unauthenticated remote vulnerabilities found by Onapsis. CVE-2026-44756 ('OVERPASS', CVSS 10.0) is a memory corruption flaw in Extended Passport (EPP) deserialisation in the SAP Kernel; CVE-2026-58240 ('S4GET', CVSS 9.8) is a missing authentication check in the NetWeaver Message Server that lets attackers register as trusted cluster nodes. Successful exploitation of either can yield OS command execution as the SAP service account, leading to full system and business data compromise, and CERT-EU urges immediate patching. No in-the-wild exploitation is reported.

CERT-EU Advisoriesupdated Sep 9, 08:15 UTC · 6d agofirst Sep 9, 00:00 UTC · 6d agoVulnerability 3 sources CVE-2026-44756 CVE-2026-58240

2026-008: Critical vulnerabilities in Ivanti Sentry

Ivanti patched Sentry: pre-auth OS command injection CVE-2026-10520 (CVSS 10) enables unauthenticated root RCE, and auth bypass CVE-2026-10523 (CVSS 9.9).

On 9 June 2026 Ivanti released an advisory fixing two critical flaws in Ivanti Sentry versions 10.5.1 and prior, 10.6.1 and prior, and 10.7.0 and prior. CVE-2026-10520 (CVSS 10.0) is an OS command injection allowing a remote unauthenticated attacker to achieve root-level RCE. CVE-2026-10523 (CVSS 9.9) is an authentication bypass letting an unauthenticated attacker create arbitrary administrative accounts and obtain full admin access. CERT-EU recommends updating appliances to fixed versions following Ivanti's guidance.

CERT-EU AdvisoriesSep 8, 15:13 UTC · 7d agoVulnerability CVE-2026-10520 CVE-2026-10523

2026-007: Critical Vulnerability in Windows Netlogon

Actively exploited CVSS 9.8 Windows Netlogon flaw lets unauthenticated attackers execute code with SYSTEM privileges on domain controllers.

Microsoft's May 2026 advisory describes CVE-2026-41089, a stack-based buffer overflow in Windows Netlogon (CVSS 9.8) that allows unauthenticated remote code execution with SYSTEM privileges on domain controllers via specially crafted packets. The Centre for Cybersecurity Belgium reports the flaw is currently being exploited by threat actors. All Windows Server versions from 2012 through 2025 acting as domain controllers are affected and require the May updates.

CERT-EU AdvisoriesSep 8, 15:13 UTC · 7d agoExploit / PoC in the wildCVE-2026-410891

2026-009: Critical Vulnerabilities in Microsoft SharePoint

WatchTowr observed active exploitation of SharePoint RCE CVE-2026-50522 (CVSS 9.8), part of an ongoing wave of exploited on-prem SharePoint flaws patched by Microsoft.

On 14 July 2026 Microsoft released updates for critical SharePoint Server RCE flaws, including CVE-2026-50522 (CVSS 9.8), a deserialisation vulnerability possibly exploitable without authentication. On 20 July 2026 WatchTowr published PoC exploit code and observed active exploitation of CVE-2026-50522, prompting CISA to urge SharePoint hardening. The advisory also covers recently fixed SharePoint flaws: CVE-2026-32201 (6.5, spoofing), CVE-2026-45659 (8.8, authenticated RCE), CVE-2026-56164 (9.8, unauthenticated privilege escalation), and CVE-2026-58644 (9.8, unauthenticated RCE). Affected products include SharePoint Server Subscription Edition, 2019, and Enterprise Server 2016; CERT-EU recommends immediate patching, credential rotation, and compromise assessments.

CERT-EU Advisoriesupdated Sep 7, 19:42 UTC · 8d agofirst Jul 22, 00:00 UTC · Jul 22, 2026Exploit / PoC in the wild 3 sources CVE-2026-50522 CVE-2026-32201 CVE-2026-45659+2 CVEs

2026-005: High Vulnerability in the Linux Kernel ("Copy Fail")

Linux kernel flaw CVE-2026-31431 ('Copy Fail', CVSS 7.8) allows unprivileged users to gain root via AF_ALG; a public PoC is out and most distros remain unpatched.

Disclosed on 29 April 2026, CVE-2026-31431 is a local privilege escalation in the Linux kernel's algif_aead module (AF_ALG crypto API), CVSS 7.8, stemming from a 2017 in-place optimisation. By chaining an AF_ALG socket operation with splice(), an unprivileged user can write 4 bytes into an arbitrary page-cache page, e.g. corrupting a setuid binary like /usr/bin/su to obtain a root shell. It affects virtually all kernels built since 2017, including Ubuntu 20.04-24.04, Amazon Linux 2023, RHEL 10.1, and SUSE 16; the mainline fix landed 1 April 2026 but no vendor packages were available as of 30 April. CERT-EU recommends the interim mitigation (disable algif_aead) and blocking AF_ALG via seccomp, prioritising Kubernetes nodes and CI/CD runners.

CERT-EU Advisoriesupdated Sep 7, 09:12 UTC · 8d agofirst Apr 29, 00:00 UTC · Apr 29, 2026Exploit / PoC 6 sources CVE-2026-31431

2026-010: Critical Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

Citrix patched NetScaler ADC/Gateway: auth bypass CVE-2026-19490 (CVSS 9.3) on Gateway/AAA configs and memory overflow CVE-2026-19489 (CVSS 8.8) requiring SIP ALG.

On 19 August 2026 Citrix published an advisory fixing two critical-severity issues in NetScaler ADC and NetScaler Gateway versions 14.1 before 14.1-73.32 and 13.1 before 13.1-63.21, plus FIPS/NDcPP builds. CVE-2026-19490 (CVSS 9.3) is an authentication bypass via alternate path, exploitable when the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server, with a SAML action condition on newer builds. CVE-2026-19489 (CVSS 8.8) is a memory overflow causing unpredictable behaviour or denial of service, requiring SIP ALG enabled on a Large Scale NAT group. CERT-EU recommends applying updated builds as soon as possible.

CERT-EU Advisoriesupdated Sep 4, 19:00 UTC · 11d agofirst Aug 19, 00:00 UTC · 27d agoVulnerability 3 sources CVE-2026-19489 CVE-2026-19490

2026-006: Critical Vulnerability in PAN-OS

Palo Alto Networks PAN-OS User-ID Authentication Portal flaw allows unauthenticated root RCE; limited exploitation observed and patches still pending.

Palo Alto Networks disclosed CVE-2026-0300 (CVSS 9.3), a buffer overflow in the PAN-OS User-ID Authentication Portal (Captive Portal) that enables unauthenticated arbitrary code execution with root privileges on PA-Series and VM-Series firewalls. Only appliances configured to use the Authentication Portal are affected. Palo Alto observed limited exploitation; at publication patches were not yet available, so restricting portal access to trusted zones or disabling it was recommended as mitigation.

CERT-EU AdvisoriesJun 5, 00:00 UTC · Jun 5, 2026Vulnerability in the wildCVE-2026-0300

2026-002: Multiple Vulnerabilities in Cisco Products

Cisco fixed SD-WAN Controller auth bypass CVE-2026-20127 (CVSS 10) exploited in the wild since 2023, plus several critical and high flaws in SD-WAN Manager.

On 25 February 2026 Cisco released advisories for multiple flaws in Catalyst SD-WAN Controller and SD-WAN Manager, potentially granting administrative access to attackers. CVE-2026-20127 (CVSS 10.0) is an authentication bypass in the Controller's peering authentication mechanism, exploited in the wild since 2023, allowing unauthenticated admin access via NETCONF, rogue device injection, and persistent access. SD-WAN Manager flaws include CVE-2026-20129 (9.8, unauthenticated API auth bypass to netadmin), CVE-2026-20126 (7.8, local privesc to root), CVE-2026-20133 (7.5, info disclosure), CVE-2026-20122 (7.1, arbitrary file overwrite), and CVE-2026-20128 (5.5, DCA info disclosure). CERT-EU recommends patching, capturing forensic evidence, IOC hunting, and restricting management-plane internet exposure.

CERT-EU AdvisoriesFeb 10, 00:00 UTC · Feb 10, 2026Exploit / PoC in the wildCVE-2026-20127 CVE-2026-20129 CVE-2026-20126+3 CVEs

2026-001: Critical vulnerabilities in Ivanti EPMM

Ivanti EPMM has two critical CVSS 9.8 flaws allowing unauthenticated remote code execution; limited exploitation has already been observed.

On 29 January 2026, Ivanti patched CVE-2026-1281 and CVE-2026-1340, two code injection vulnerabilities (both CVSS 9.8) in Endpoint Manager Mobile that allow unauthenticated remote code execution. CERT-EU reports one of the flaws was exploited in a limited number of cases. Affected versions include EPMM 12.5.1.0, 12.6.1.0 and 12.7.0.0 and prior; the permanent fix is planned for release 12.8.0.0 in Q1 2026.

CERT-EU AdvisoriesJan 30, 00:00 UTC · Jan 30, 2026Vulnerability in the wildCVE-2026-1281 CVE-2026-1340