PT-2025-31403 · Ashlar Vellum+1 · Cobalt

Rocco Calvi + 1 · Published 2025-07-30 · Updated 2025-09-18 · CVE-2025-7996

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Ashlar-Vellum Cobalt (affected versions not specified)

Description This issue allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this, as the target must visit a malicious page or open a malicious file. The flaw resides within the parsing of AR files due to a lack of proper validation of user-supplied data, leading to a write past the end of an allocated data structure. An attacker can leverage this to execute code in the context of the current process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2025-7996

ZDI-25-716

Affected Products

Cobalt

References · 4

• https://zerodayinitiative.com/advisories/ZDI-25-716 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-7996 · Security Note
• https://twitter.com/CVEnew/status/1968561181863313734 · Twitter Post
• https://t.me/CVEtracker/32792 · Telegram Post