In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing VC6 files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.

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Vendors Products
Advisories
Source ID Title
EUVD EUVD EUVD-2025-28035 In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing VC6 files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
Fixes

Solution

Ashlar-Vellum recommends users update to Versions 12.6.1204.204 and above https://download.ashlar.com/v12/index.html  of the affected products. * Ashlar-Vellum strongly recommends that all users update Cobalt, Xenon, Argon, Lithium, and Cobalt Share to the latest supported version by selecting Help > Check Web for Updates from the application's main menu. * Users should only open CO/XE/AR/LI files or import supported file formats from trusted sources.


Workaround

No workaround given by the vendor.

History

Fri, 28 Nov 2025 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Ashlar cobalt Share
CPEs cpe:2.3:a:ashlar:argon:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:cobalt_share:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:lithium:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:xenon:*:*:*:*:*:*:*:*
Vendors & Products Ashlar cobalt Share

Thu, 21 Aug 2025 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Ashlar
Ashlar argon
Ashlar cobalt
Ashlar lithium
Ashlar xenon
Vendors & Products Ashlar
Ashlar argon
Ashlar cobalt
Ashlar lithium
Ashlar xenon

Tue, 19 Aug 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 18 Aug 2025 21:30:00 +0000

Type Values Removed Values Added
Description In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing VC6 files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
Title Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share Heap-based Buffer Overflow
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2025-08-19T13:27:38.912Z

Reserved: 2025-07-08T17:12:36.309Z

Link: CVE-2025-46269

cve-icon Vulnrichment

Updated: 2025-08-19T13:27:31.804Z

cve-icon NVD

Status : Analyzed

Published: 2025-08-18T22:15:26.760

Modified: 2025-11-28T16:37:30.877

Link: CVE-2025-46269

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-21T12:59:12Z

Weaknesses