Ashlar-Vellum Cobalt VC6 File Parser type confusion

Summaryinfo

A vulnerability was found in Ashlar-Vellum Cobalt. It has been classified as critical. Affected is an unknown function of the component VC6 File Parser. Performing a manipulation results in type confusion. This vulnerability is cataloged as CVE-2025-2016. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Ashlar-Vellum Cobalt (unknown version). This affects an unknown code block of the component VC6 File Parser. The manipulation with an unknown input leads to a type confusion vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Ashlar-Vellum Cobalt VC6 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 VC6 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-25238.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2025-2016 since 03/05/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/08/2025).

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

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Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

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