Ashlar-Vellum Cobalt XE File Parser type confusion

Summaryinfo

A vulnerability labeled as critical has been found in Ashlar-Vellum Cobalt. Affected is an unknown function of the component XE File Parser. Executing a manipulation can lead to type confusion. This vulnerability appears as CVE-2025-8005. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt (the affected version unknown). It has been declared as critical. This vulnerability affects an unknown part of the component XE 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. CVE summarizes:

Ashlar-Vellum Cobalt XE 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 XE 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-26237.

The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2025-8005. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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-2025-29785). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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