CVE-2025-11465
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Vulnerability report for CVE-2025-11465, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-10-29

Last updated on: 2025-11-04

Assigner: Zero Day Initiative

Description

Ashlar-Vellum Cobalt CO File Parsing Use-After-Free 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 CO files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26631.

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Meta Information

Published
2025-10-29
Last Modified
2025-11-04
Generated
2026-07-06
AI Q&A
2025-10-29
EPSS Evaluated
2026-07-05
NVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ashlar cobalt 12.2.1204.97

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a use-after-free flaw in Ashlar-Vellum Cobalt's CO file parsing. It occurs because the software does not check if an object exists before operating on it, which can be exploited by remote attackers to execute arbitrary code. Exploitation requires user interaction, such as visiting a malicious page or opening a malicious file.

Impact Analysis

If exploited, this vulnerability allows attackers to execute arbitrary code within the context of the affected process, potentially leading to full compromise of the system, including data theft, system manipulation, or further malware installation.

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