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VulnerabilityPublished

CVE-2025-7994: Ashlar-Vellum Cobalt · Out-of-bounds Read

Affects Ashlar-Vellum CobaltSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.0 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

European organizations should implement the following specific measures: 1) Immediately audit and inventory all Ashlar-Vellum Cobalt installations to identify affected versions (12 SP1). 2) Restrict or disable the opening of AR files from untrusted or external sources, especially those received via email or downloaded from the internet. 3) Implement application whitelisting and sandboxing for Ashlar-Vellum Cobalt to contain potential exploitation. 4) Educate users on the risks of opening unsolicited or suspicious files and visiting untrusted websites. 5) Monitor network and endpoint logs for unusual behavior associated with Ashlar-Vellum Cobalt processes. 6) Coordinate with Ashlar-Vellum for timely patch deployment once available and test patches in controlled environments before widespread rollout. 7) Employ network-level protections such as web filtering and email security gateways to block malicious payloads. 8) Consider deploying endpoint detection and response (EDR) solutions capable of detecting exploitation attempts related to out-of-bounds reads and remote code execution. These targeted steps go beyond generic advice by focusing on the specific attack vector (AR file parsing) and the operational context of Ashlar-Vellum Cobalt users.

Description

Ashlar-Vellum Cobalt AR File Parsing Out-Of-Bounds Read 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 user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25976.

References

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