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Vulnerability record · CVE-2025-8001 · published 17 September 2025

CVE-2025-8001: Ashlar cobalt memory buffer overflow vulnerability

Ashlar · Cobalt

Ashlar-Vellum Cobalt CO File Parsing Memory Corruption 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 proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26053.

7.8 CVSS 3.0 High EPSS 0.21% · top 90.4% CWE-119 · Memory buffer overflow
7.8CVSS 3.0 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
26 Sep 2026Last modified by NVD

Description

Ashlar-Vellum Cobalt CO File Parsing Memory Corruption 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 proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26053.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zerodayinitiative.com/advisories/ZDI-25-721/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-34293Ashlar cobalt out-of-bounds write vulnerabilityAshlar-Vellum Cobalt Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on…EPSS 0.76%8.4CVE-2025-65088Ashlar argon out-of-bounds read vulnerabilityAn Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that…EPSS 0.17%8.4CVE-2025-65086Ashlar argon out-of-bounds write vulnerabilityAn Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior tha…EPSS 0.17%8.4CVE-2025-65087Ashlar argon out-of-bounds read vulnerabilityAn Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that…EPSS 0.17%8.4CVE-2025-65085Ashlar argon heap-based buffer overflow vulnerabilityA Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and pri…EPSS 0.42%8.4CVE-2025-65084Ashlar argon out-of-bounds write vulnerabilityAn Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior tha…EPSS 0.34%8.4CVE-2025-52584Ashlar argon heap-based buffer overflow vulnerabilityIn Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of…EPSS 0.17%8.4CVE-2025-46269Ashlar argon heap-based buffer overflow vulnerabilityIn Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of…EPSS 0.17%

Source: NIST National Vulnerability Database (record CVE-2025-8001), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.