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ZDI-26-620: Microsoft Windows UMPDDrvPlgBlt Improper Object Management Local Privilege Escalation Vulnerability

ZDI disclosed CVE-2026-62712, a CVSS 7.8 Windows UMPDDrvPlgBlt improper object-management flaw enabling local privilege escalation.

Zero Day Initiative advisory ZDI-26-620 describes an improper object management flaw in Microsoft Windows' UMPDDrvPlgBlt component, sharing CVE-2026-62712 with the related UMPDDrvStretchBlt advisory. A local attacker able to run low-privileged code can escalate privileges on affected installations. The issue carries a CVSS 3.0 rating of 7.8.

ZDI Published AdvisoriesSep 8, 05:00 UTC · 8d agoVulnerability 4 sources CVE-2026-627121

ZDI-26-640: Oracle VirtualBox VirtioSCSI Uninitialized Memory Information Disclosure Vulnerability

ZDI detailed an uninitialized memory flaw in Oracle VirtualBox's VirtioSCSI (CVE-2026-71132) allowing local attackers to disclose sensitive information.

Zero Day Initiative published ZDI-26-640, a CVSS 5.3 information disclosure vulnerability in the VirtioSCSI component of Oracle VirtualBox. An attacker must first run high-privileged code on the guest system before the uninitialized memory issue can be used to disclose sensitive information. The flaw is tracked as CVE-2026-71132. The advisory reports no exploitation activity.

ZDI Published AdvisoriesSep 9, 05:00 UTC · 7d agoVulnerability 6 sources CVE-2026-71132

The GNU C Library security advisory update for 2026-09-10

glibc advisory GLIBC-SA-2026-0016: nscd can crash from a stack overflow when an untrusted DNS server returns oversized responses.

A new GNU C Library advisory (GLIBC-SA-2026-0016) describes a stack overflow in the nscd service caused by unbounded alloca use. glibc 2.3.4 and newer may crash when a malicious DNS server returns an oversized response, resulting in degraded DNS resolution. Exploitation requires nscd to be enabled and the system to be using an untrusted DNS server. The advisory was posted to oss-security by glibc maintainer Siddhesh Poyarekar.

oss-securityupdated Sep 14, 19:54 UTC · 1d agofirst Sep 11, 01:59 UTC · 5d agoVulnerability 2 sources2

Latvian officials resign after cyberattack exposes data on 1.2 million people

Latvia's road traffic agency CSDD confirmed a breach exposing data on 1.2 million people and 200,000 businesses, prompting leadership resignations.

Latvia's Road Traffic Safety Directorate (CSDD) said hackers accessed payment receipt data dating back to 2008, covering over 1.2 million people and 200,000 legal entities, about two-thirds of Latvia's population. Stolen data includes personal ID numbers, license plates, payment amounts and addresses; phone numbers, emails and passwords were not affected. CERT.LV said attackers exploited a vulnerability in an internet-exposed CSDD system, and President Edgars Rinkevics called the breach a significant national security threat. The supervisory board resigned and chief Aivars Aksenoks said he will leave; state police opened criminal proceedings while responsibility with IT contractor Tet is disputed.

The RecordAug 19, 13:55 UTC · 27d agoData breach

[webapps] webpack_devserver 5.2.5 - CSRF

Exploit-DB published a cross-site request forgery proof of concept for webpack_devserver 5.2.5.

Exploit-DB lists a webapps CSRF proof-of-concept against webpack_devserver version 5.2.5. The flaw affects the local webpack development server, where cross-site requests could be issued against it. No CVE id is cited in the entry and no active exploitation is reported.

Exploit-DBAug 17, 00:00 UTC · Aug 17, 2026Exploit / PoC

24th August – Threat Intelligence Report

Latvia's Road Traffic Safety Directorate (CSDD) confirmed a breach exposing payment records of 1.2 million people and 200,000 organizations.

Latvia's Road Traffic Safety Directorate (CSDD) has confirmed a data breach affecting payment records of more than 1.2 million people, roughly two-thirds of the country's population, as well as 200,000 organizations. The disclosure was highlighted in Check Point Research's weekly threat intelligence bulletin for the week of August 24, 2026. The scale of exposure makes this one of the largest confirmed breaches reported in Latvia.

Check Point ResearchAug 24, 14:07 UTC · 22d agoData breach

Risky Bulletin: Academics find source code overlaps between Geedge and China's Great Firewall

Academics linked Chinese vendor Geedge Networks' Tiangou Secure Gateway source code to one of the Great Firewall's three traffic filtering capabilities.

US researchers presenting at USENIX Security reconstructed Geedge Networks' Tiangou Secure Gateway firmware from over 100,000 leaked files, including Git repositories with commit history, and matched its filtering behavior to sections of China's Great Firewall. They found only 1 of 3 characterized DNS injectors matched Geedge code, noted the system relies on memory-unsafe C components and copied third-party code, and said its bugs could aid future circumvention tools. Geedge also exports censorship tools to Kazakhstan, Ethiopia, Pakistan, and Myanmar. The newsletter additionally rounds up multiple breaches.

Risky Business NewsAug 21, 02:55 UTC · 26d agoResearch2

ZDI-26-690: Linux Kernel MCTP Routing Uninitialized Memory Information Disclosure Vulnerability

ZDI discloses Linux Kernel MCTP routing uninitialized memory flaw (CVE-2026-45930) letting high-privileged local attackers leak sensitive kernel information.

ZDI-26-690 describes an uninitialized memory information disclosure vulnerability in the Linux Kernel MCTP routing subsystem, tracked as CVE-2026-45930 with a CVSS rating of 6.0. Exploitation requires the attacker to already have the ability to execute high-privileged code on the target system. Impact is limited to disclosure of sensitive information from affected installations.

ZDI Published AdvisoriesSep 14, 05:00 UTC · 2d agoVulnerability CVE-2026-45930

ZDI-26-689: Linux Kernel SCTP Subsystem Race Condition Information Disclosure Vulnerability

ZDI discloses Linux Kernel SCTP subsystem race condition (CVE-2026-46227) allowing low-privileged local attackers to disclose sensitive information, CVSS 6.4.

ZDI-26-689 describes a race condition information disclosure vulnerability in the Linux Kernel SCTP subsystem, assigned CVE-2026-46227 with a CVSS rating of 6.4. An attacker needs the ability to execute low-privileged code on the target system to exploit the flaw. The vulnerability exposes sensitive information from affected installations.

ZDI Published AdvisoriesSep 14, 05:00 UTC · 2d agoVulnerability CVE-2026-46227

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-securitySep 10, 03:35 UTC · 6d agoVulnerability

ZDI-26-563: (Pwn2Own) Home Assistant Green Simple Service Discovery Protocol Server-Side Request Forgery Vulnerability

ZDI disclosed a Pwn2Own SSRF flaw (CVSS 5.4) in Home Assistant Green's SSDP server, letting unauthenticated network-adjacent attackers trigger arbitrary server-side requests.

The Zero Day Initiative published ZDI-26-563 for a server-side request forgery in the Simple Service Discovery Protocol server on Home Assistant Green. The bug was demonstrated at Pwn2Own and allows network-adjacent, unauthenticated attackers to initiate arbitrary server-side requests on affected installations. ZDI rated the issue CVSS 5.4.

ZDI Published AdvisoriesAug 12, 05:00 UTC · Aug 12, 2026Advisory

ZDI-26-613: (0Day) pdfforge PDF Architect PDF File Parsing Memory Corruption Remote Code Execution Vulnerability

ZDI published ZDI-26-613, an unpatched memory corruption flaw in pdfforge PDF Architect PDF parsing enabling remote code execution (CVSS 7.8).

The Zero Day Initiative disclosed ZDI-26-613, a memory corruption vulnerability in pdfforge PDF Architect's PDF file parsing that allows remote code execution on affected installations. User interaction is required, meaning the target must visit a malicious page or open a malicious file. ZDI assigned a CVSS score of 7.8 and classifies the issue as a 0day.

ZDI Published AdvisoriesAug 31, 05:00 UTC · 16d agoAdvisory

ZDI-26-542: Microsoft Windows UMPDDrvBitBlt Improper Object Management Local Privilege Escalation Vulnerability

ZDI discloses CVE-2026-62712, a CVSS 7.8 Windows UMPDDrvBitBlt improper object management flaw allowing local attackers to escalate privileges.

ZDI advisory ZDI-26-542 describes improper object management in Microsoft Windows' UMPDDrvBitBlt function, tracked as CVE-2026-62712 with a CVSS score of 7.8. The flaw allows local attackers to escalate privileges on affected Windows installations. Exploitation requires first obtaining the ability to execute low-privileged code on the target system.

ZDI Published AdvisoriesAug 11, 05:00 UTC · Aug 11, 2026Vulnerability CVE-2026-627122

USN-8737-1: GNU C Library vulnerabilities

Ubuntu patches GNU C Library flaws including a strfmon buffer overflow and tdelete out-of-bounds access that could enable code execution.

Ubuntu issued USN-8737-1 fixing multiple GNU C Library vulnerabilities. CVE-2026-19499 is a buffer overflow in the strfmon function when handling right-justification padding, affecting only Ubuntu 26.04 LTS. CVE-2026-19542 is an out-of-bounds stack array access in the tdelete function. An additional issue involves incorrect memory handling in wordexp with the WRDE_APPEND flag. All issues could potentially cause denial of service or arbitrary code execution.

Ubuntu Security NoticesSep 8, 15:17 UTC · 7d agoAdvisory CVE-2026-19499 CVE-2026-19542

ZDI-26-573: Linux Kernel KSMBD Response Header Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI disclosed an unauthenticated out-of-bounds read (CVE-2026-68431) in Linux Kernel KSMBD causing sensitive information disclosure, CVSS 9.3.

The Zero Day Initiative published ZDI-26-573 describing an out-of-bounds read in the Linux Kernel KSMBD response header handling. Unauthenticated remote attackers can disclose sensitive information, but only systems with ksmbd enabled are affected. ZDI assigned a CVSS score of 9.3 and the identifier CVE-2026-68431.

ZDI Published AdvisoriesAug 13, 05:00 UTC · Aug 13, 2026Vulnerability CVE-2026-68431

Compiler Can Undo Your Security Checks

Chris Domas explains at Black Hat how legal compiler optimizations can strip security checks and memory-clearing operations, turning secure C source into vulnerable binaries.

David Bombal interviews researcher Chris Domas at Black Hat USA 2026 about how the C abstract machine permits compilers to legally transform code in ways that remove security protections, delete memory-clearing operations, and introduce time-of-check to time-of-use vulnerabilities. Factors like register pressure, structure layout, and data size affect vulnerability, with examples where 17 or 33 byte buffers are safe while nearby sizes produce vulnerable code. An AI-assisted analysis of 500 million lines of open-source code identified 300 potentially dangerous patterns. Recommended mitigations include enabling compiler warnings, using sanitizers, analyzing optimized builds, and testing the exact binary that ships.

Hacker News · securitySep 12, 14:07 UTC · 3d agoResearch HN 22↑ · 27 comments

ZDI-26-587: Ashlar-Vellum Cobalt VS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI advisory ZDI-26-587 details a heap-based buffer overflow RCE (CVE-2026-19781, CVSS 7.8) in Ashlar-Vellum Cobalt VS file parsing, requiring user interaction.

The Zero Day Initiative released advisory ZDI-26-587 covering a heap-based buffer overflow in Ashlar-Vellum Cobalt's VS file parsing. A remote attacker can execute arbitrary code when the target opens a malicious file or visits a crafted page. ZDI rated the vulnerability CVSS 7.8 and assigned CVE-2026-19781.

ZDI Published AdvisoriesAug 24, 05:00 UTC · 23d agoAdvisory CVE-2026-19781

ZDI-26-537: (Pwn2Own) Microsoft Windows storport Integer Overflow Local Privilege Escalation Vulnerability

ZDI discloses a Pwn2Own Windows storport integer overflow local privilege escalation flaw (CVE-2026-65814, CVSS 8.8) requiring existing low-privileged code execution.

ZDI advisory ZDI-26-537 describes an integer overflow in the Microsoft Windows storport driver that allows local attackers to escalate privileges. Exploitation requires the attacker to first obtain the ability to execute low-privileged code on the target system. The vulnerability has a CVSS rating of 8.8 and is tracked as CVE-2026-65814; it originated from Pwn2Own.

ZDI Published AdvisoriesAug 11, 05:00 UTC · Aug 11, 2026Vulnerability CVE-2026-658141

ZDI-26-636: Oracle Outside In Technology PostScript File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI disclosed a heap-based buffer overflow in Oracle Outside In Technology's PostScript parsing (CVE-2026-60412) enabling user-triggered remote code execution.

Zero Day Initiative published ZDI-26-636, a CVSS 7.8 heap-based buffer overflow in PostScript file parsing within Oracle Outside In Technology. Remote attackers can execute arbitrary code when the target opens a malicious file or visits a malicious page, making user interaction a requirement. The vulnerability is tracked as CVE-2026-60412. The advisory reports no exploitation.

ZDI Published AdvisoriesSep 9, 05:00 UTC · 7d agoVulnerability 4 sources CVE-2026-604121

VU#369611: ExLlamaV3 contains Denial of Service vulnerability via insufficient bounds checking on kernel dispatch index

CERT/CC details CVE-2026-84286, an out-of-bounds memory access in ExLlamaV3's CUDA extension causing denial-of-service crashes; fixed via merged pull request.

CERT/CC published VU#369611 for CVE-2026-84286, an out-of-bounds memory access in the exllamav3_ext CUDA extension of the ExLlamaV3 LLM inference library. A crafted input with kernel parameter K set to 0 produces a negative index into a fixed 24-entry kernel dispatch array, causing a CUDA illegal memory access and denial-of-service crashes. The vendor fixed the issue in the main repository via pull request #310, and maintainers of 49 downstream projects, including ezexl3 and MawDiscord, are advised to rebuild against the patched version. The issue was reported by Nathan Keys and impact is limited to crashes and instability, not code execution.

CERT/CC Vulnerability NotesSep 11, 20:11 UTC · 4d agoVulnerability CVE-2026-842861

USN-8737-2: GNU C Library vulnerabilities

Ubuntu extends glibc fixes to 24.04 LTS, patching buffer overflow in strfmon and out-of-bounds access in tdelete, both potentially leading to code execution.

USN-8737-2 provides the Ubuntu 24.04 LTS counterpart to fixes released in USN-8737-1 for GNU C Library vulnerabilities. CVE-2026-19499 is a buffer overflow in strfmon when handling right-justification padding, potentially allowing denial of service or arbitrary code execution on Ubuntu 26.04 LTS. CVE-2026-19542 is an out-of-bounds stack array access in tdelete that could also result in denial of service or code execution.

Ubuntu Security Noticesupdated Sep 11, 12:03 UTC · 4d agofirst Sep 10, 11:25 UTC · 5d agoAdvisory 13 sources CVE-2026-19499 CVE-2026-195421

ZDI-26-691: Linux Kernel Netlink-based Wireless Configuration Integer Overflow Local Privilege Escalation Vulnerability

ZDI-26-691: integer overflow in Linux kernel netlink wireless configuration (CVE-2026-53182) allows local privilege escalation by attackers already running high-privileged code; CVSS 8.2.

ZDI advisory ZDI-26-691 discloses an integer overflow in the Linux kernel's netlink-based wireless configuration that allows local attackers to escalate privileges on affected installations. Exploitation requires the attacker to first obtain the ability to execute high-privileged code on the target system. ZDI assigned a CVSS rating of 8.2 and CVE-2026-53182.

ZDI Published AdvisoriesSep 14, 05:00 UTC · 2d agoVulnerability CVE-2026-53182

Safety for Whom? Boundary-Aware Self-Distillation for Controlled LLM Safety Refusal

A self-distillation safety framework tunes narrow-boundary refusals in Qwen3-8B, raising target-domain refusal to 84.75% while cutting over-refusal from 15.20% to 5.20%.

The paper formulates narrow-boundary safety, where deployments need refusals within specific topics rather than whole subjects, and proposes an offline self-generated framework with controlled topic generation, escalating retries, and harmful-benign boundary pairs. On political persuasion with Qwen3-8B, the method raised target-domain refusal from 9.47% to 84.75% and cut the mean unsafe-response rate across three broader benchmarks from 26.26% to 0.14%. Verified target-model responses reduced over-refusal from 15.20% to 5.20%, and boundary-pair data cut comply-side over-refusal on held-out pairs from 32.94% to 4.16%. Results show data composition controls the safety-usability trade-off and alignment should be evaluated on both sides of the refusal boundary.

Hugging Face daily papersSep 2, 20:00 UTC · 13d agoAI safety & security1

ZDI-26-536: (Pwn2Own) Microsoft Windows http.sys Integer Overflow Local Privilege Escalation Vulnerability

ZDI discloses CVE-2026-62735, a Pwn2Own-demonstrated Windows http.sys integer overflow (CVSS 8.8) enabling local privilege escalation.

ZDI advisory ZDI-26-536 describes an integer overflow in Microsoft Windows http.sys, tracked as CVE-2026-62735 with a CVSS score of 8.8. The flaw was demonstrated at Pwn2Own and allows local attackers to escalate privileges on affected Windows installations. Exploitation requires first obtaining the ability to execute low-privileged code on the target system.

ZDI Published AdvisoriesAug 11, 05:00 UTC · Aug 11, 2026Vulnerability CVE-2026-627351

[webapps] C-MOR 6.0104 - Directory Traversal

A directory traversal proof-of-concept for video surveillance software C-MOR version 6.0104 has been published on Exploit-DB.

Exploit-DB entry 52666 discloses a directory traversal vulnerability in C-MOR version 6.0104, a video surveillance platform. The issue is listed under web application vulnerabilities. No CVE identifier or exploitation evidence is included in the listing.

Exploit-DBAug 31, 00:00 UTC · 16d agoExploit / PoC

ZDI-26-682: Linux Kernel IPv6 Neighbour Discovery Uninitialized Memory Information Disclosure Vulnerability

ZDI discloses an uninitialized-memory flaw in Linux kernel IPv6 neighbor discovery (CVE-2026-43040, CVSS 6.0) allowing information disclosure by already-privileged local attackers.

ZDI advisory ZDI-26-682 describes an uninitialized memory vulnerability in the Linux kernel's IPv6 Neighbour Discovery code, tracked as CVE-2026-43040 with a CVSS score of 6.0. Exploitation requires the attacker to already execute high-privileged code on the target, which severely limits practical impact to kernel memory information disclosure. No active exploitation is mentioned.

ZDI Published AdvisoriesSep 14, 05:00 UTC · 2d agoVulnerability CVE-2026-430401

Threat Brief: 3CXDesktopApp Supply Chain Attack (Updated)

Trojanized 3CXDesktopApp installers for Windows and macOS loaded RC4-encrypted shellcode delivering a backdoor to hundreds of thousands of 3CX users.

Threat actors compromised the 3CXDesktopApp build process, adding malicious libraries (ffmpeg.dll, d3dcompiler_47.dll) to installers downloaded from the developer's website. The Windows MSI loader decrypts embedded shellcode with RC4, sleeps for a random 1-4 weeks, then beacons to C2 hidden in icon files on GitHub. Unit 42 fingerprinted 247,277 IPs across 199 countries using 3CX applications and blocked shellcode execution at 127 Cortex XDR customers between March 9-30, 2023.

Palo Alto Unit 42Aug 17, 12:18 UTC · 29d agoThreat actor in the wild1

ZDI-26-572: Linux Kernel XFRM Race Condition Local Privilege Escalation Vulnerability

ZDI publishes ZDI-26-572, a CVSS 7.5 race condition local privilege escalation in the Linux kernel's XFRM subsystem.

The Zero Day Initiative disclosed a race condition in the Linux kernel's XFRM (transform) subsystem allowing local attackers to escalate privileges. Exploitation requires the attacker to first run high-privileged code on the affected system. The advisory carries a CVSS rating of 7.5; no CVE id is listed in the disclosure text.

ZDI Published AdvisoriesAug 13, 05:00 UTC · Aug 13, 2026Advisory