Integer Overflow in Ashlar-Vellum Cobalt XE File Parsing
CVE-2025-11463

7.8HIGH

Key Information:

Vendor

Ashlar-vellum

Status
Cobalt
Vendor
CVE Published:
29 October 2025

What is CVE-2025-11463?

The Ashlar-Vellum Cobalt XE software is vulnerable to an integer overflow during the parsing of XE files, allowing malicious actors to execute arbitrary code on the affected systems. The flaw arises from improper validation of user-supplied data, enabling attackers to exploit the vulnerability by enticing users to open crafted files or visit malicious web pages. Successful exploitation could lead to execution of harmful code with the privileges of the current user, establishing a significant security risk for those using this product.

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Affected Version(s)

Cobalt 1204.97

References

https://www.zerodayinitiative.com/advisories/ZDI-25-954/
x_research-advisory

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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