Remote Code Execution Vulnerability in Ashlar-Vellum Cobalt
CVE-2025-7990

7.8HIGH

Key Information:

Vendor

Ashlar-vellum

Status
Cobalt
Vendor
CVE Published:
17 September 2025

What is CVE-2025-7990?

The vulnerability in Ashlar-Vellum Cobalt arises from improper validation during the parsing of VC6 files, enabling an attacker to perform an out-of-bounds write. This flaw allows remote execution of arbitrary code, necessitating user interaction, such as visiting a malicious site or opening a compromised file. The exploitation of this weakness can lead to significant security breaches, highlighting the importance of caution when handling VC6 files.

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Affected Version(s)

Cobalt 12 SP1

References

https://www.zerodayinitiative.com/advisories/ZDI-25-638/
x_research-advisory

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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