Ashlar-Vellum Cobalt CO File Parser type confusion

Summaryinfo

A vulnerability was found in Ashlar-Vellum Cobalt. It has been rated as critical. The impacted element is an unknown function of the component CO File Parser. This manipulation causes type confusion. This vulnerability is registered as CVE-2025-8002. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Ashlar-Vellum Cobalt (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component CO File Parser. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Ashlar-Vellum Cobalt CO File Parsing Type Confusion 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 type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26233.

The advisory is shared at zerodayinitiative.com. This vulnerability is known as CVE-2025-8002. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (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-2025-29783). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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