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

Summaryinfo

A vulnerability marked as critical has been reported in Ashlar-Vellum Cobalt. Affected by this vulnerability is an unknown functionality of the component XE File Parser. The manipulation leads to out-of-bounds. This vulnerability is traded as CVE-2025-7997. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt (the affected version is unknown). It has been rated as critical. This issue affects an unknown code of the component XE 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. The summary by CVE is:

Ashlar-Vellum Cobalt XE 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 XE 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 data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26045.

The advisory is shared at zerodayinitiative.com. The identification of this vulnerability is CVE-2025-7997. 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.

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-2025-29788). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Ashlar-Vellum

Name

• Cobalt

License

• commercial

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion