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High · 7.8 CVE-2025-11463 EUVD-2025-36704GHSA-9cpj-q6fm-2g3q

Ashlar-Vellum Cobalt XE File Parsing Integer Overflow Remote Code Execution Vulnerability

Published Oct 29, 2025 · Updated Oct 30, 2025 · Assigned by zdi

Description

Ashlar-Vellum Cobalt XE File Parsing Integer Overflow 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 an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26626.

Affected products

VendorProductAffectedFixed
Ashlar-Vellum Cobalt 1204.97 —

References