Out-Of-Bounds Read Vulnerability in Ashlar-Vellum Cobalt Product
CVE-2025-7989

7.8HIGH

Key Information:

Vendor

Ashlar-vellum

Status
Cobalt
Vendor
CVE Published:
17 September 2025

What is CVE-2025-7989?

A security vulnerability in Ashlar-Vellum's Cobalt product allows remote attackers to execute arbitrary code through a flaw in AR file parsing. The vulnerability arises from inadequate validation of user-supplied data, which can lead to unintended read operations beyond allocated data structures. An exploit requires user interaction, as the target must access a malicious webpage or open a compromised file. This flaw poses significant risks, enabling attackers to gain control within the context of the current process.

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Affected Version(s)

Cobalt 12 SP1

References

https://www.zerodayinitiative.com/advisories/ZDI-25-640/
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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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