Ashlar-Vellum Graphite VC6 File Parser out-of-bounds write

Summaryinfo

A vulnerability, which was classified as critical, has been found in Ashlar-Vellum Graphite. This affects an unknown part of the component VC6 File Parser. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2025-7988. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Ashlar-Vellum Graphite (affected version unknown). This issue affects an unknown functionality of the component VC6 File Parser. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. 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 write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25862.

The advisory is shared at zerodayinitiative.com. The identification of this vulnerability is CVE-2025-7988. 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. 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Ashlar-Vellum

Name

• Graphite

License

• commercial

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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