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CVE Watch12 nov 2026

CVE-2026-121743

Ashlar-Vellum Cobalt AR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attack

CVSS

7.8

Alto

EPSS

—

KEV

—

Exploit Today

—

0-100

Publicado: 12 nov 2026 · Última mod.: 12 nov 2026 · CWE-122

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Ashlar-Vellum Cobalt AR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of AR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28675.

Referencias oficiales

www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-26-873/

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