CVE-2025-11465: Ashlar-Vellum Cobalt CO File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows…
CVE-2025-11465 · Severity: high · CVSS 7.8 · Published 2025-10-29
Ashlar-Vellum Cobalt CO File Parsing Use-After-Free 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 CO files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26631.
No. Junglewise Threat Intelligence has no report of CVE-2025-11465 being exploited in the wild.
How severe is CVE-2025-11465?
High severity, with a CVSS score of 7.8, published 29 October 2025.
Which products and versions are affected?
Ashlar Cobalt. The advisory does not name versions.
Is there a fix for CVE-2025-11465?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-11465?
Check whether you run Ashlar Cobalt. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.