Ashlar-Vellum Cobalt LI File Parser out-of-bounds

Summaryinfo

A vulnerability, which was classified as critical, was found in Ashlar-Vellum Cobalt. The affected element is an unknown function of the component LI File Parser. Such manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2025-7977. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt (affected version not known). It has been rated as critical. Affected by this issue is some unknown functionality of the component LI File Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Ashlar-Vellum Cobalt LI File Parsing Out-Of-Bounds Read 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 LI files. The issue results from the lack of proper validation of user-supplied data, which can result in a read before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25354.

The advisory is shared for download at zerodayinitiative.com. This vulnerability is handled as CVE-2025-7977. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

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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