CVE-2025-2020

Ashlar-Vellum Cobalt 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 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 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-25254.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-25-124/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ashlar:cobalt:12.0.1204.91:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-03-11 21:15

Updated : 2025-08-08 16:27

NVD link : CVE-2025-2020

Mitre link : CVE-2025-2020

CVE.ORG link : CVE-2025-2020

JSON object : View

Products Affected

ashlar

cobalt

CWE

CWE-787

Out-of-bounds Write

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