Ashlar-Vellum Cobalt CO File Parser memory corruption

Summaryinfo

A vulnerability was found in Ashlar-Vellum Cobalt. It has been declared as critical. The affected element is an unknown function of the component CO File Parser. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2025-8001. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Ashlar-Vellum Cobalt (version now known). Affected is some unknown processing of the component CO File Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Ashlar-Vellum Cobalt CO File Parsing Memory Corruption 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 proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26053.

The advisory is shared for download at zerodayinitiative.com. This vulnerability is traded as CVE-2025-8001. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/18/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-29786). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

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Once again VulDB remains the best source for vulnerability data.

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