CVE-2025-7991
Ashlar-Vellum Cobalt VC6 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
17 Sep 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
Ashlar-Vellum Cobalt VC6 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 VC6 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-25945.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Ashlar-Vellum · CobaltWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →