Out-Of-Bounds Write Vulnerability in Ashlar-Vellum Cobalt Software
CVE-2025-7998

7.8HIGH

Key Information:

Vendor

Ashlar-vellum

Status
Cobalt
Vendor
CVE Published:
17 September 2025

What is CVE-2025-7998?

The Ashlar-Vellum Cobalt software contains a vulnerability in its CO file parsing capabilities, which is caused by insufficient validation of user-supplied input. This flaw may allow an attacker to perform an out-of-bounds write operation, leading to the potential execution of arbitrary code within the context of the affected process. To exploit this issue, an attacker must entice a user to access a malicious website or open a specially crafted CO file, making user interaction a crucial part of the exploitation process.

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Affected Version(s)

Cobalt 12 SP1

References

https://www.zerodayinitiative.com/advisories/ZDI-25-715/
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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