Ashlar-Vellum Cobalt CO File Parser use after free

Summaryinfo

A vulnerability, which was classified as critical, has been found in Ashlar-Vellum Cobalt. The affected element is an unknown function of the component CO File Parser. The manipulation leads to use after free. This vulnerability is referenced as CVE-2025-2013. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component CO File Parser. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Ashlar-Vellum Cobalt CO File Parsing Use-After-Free 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 validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25186.

It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2025-2013 since 03/05/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful 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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