// For flags

CVE-2025-46269

Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share Heap-based Buffer Overflow

Severity Score

8.4
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

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.

*Credits: Michael Heinzl reported these vulnerabilities to CISA.
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
System
Vulnerable | Subsequent
Confidentiality
High
None
Integrity
High
None
Availability
High
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2025-07-08 CVE Reserved
  • 2025-08-18 CVE Published
  • 2025-08-19 CVE Updated
  • 2025-08-24 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-122: Heap-based Buffer Overflow
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ashlar-Vellum
Search vendor "Ashlar-Vellum"
Cobalt
Search vendor "Ashlar-Vellum" for product "Cobalt"
< 12.6.1204.204
Search vendor "Ashlar-Vellum" for product "Cobalt" and version " < 12.6.1204.204"
en
Affected
Ashlar-Vellum
Search vendor "Ashlar-Vellum"
Xenon
Search vendor "Ashlar-Vellum" for product "Xenon"
< 12.6.1204.204
Search vendor "Ashlar-Vellum" for product "Xenon" and version " < 12.6.1204.204"
en
Affected
Ashlar-Vellum
Search vendor "Ashlar-Vellum"
Argon
Search vendor "Ashlar-Vellum" for product "Argon"
< 12.6.1204.204
Search vendor "Ashlar-Vellum" for product "Argon" and version " < 12.6.1204.204"
en
Affected
Ashlar-Vellum
Search vendor "Ashlar-Vellum"
Lithium
Search vendor "Ashlar-Vellum" for product "Lithium"
< 12.6.1204.204
Search vendor "Ashlar-Vellum" for product "Lithium" and version " < 12.6.1204.204"
en
Affected
Ashlar-Vellum
Search vendor "Ashlar-Vellum"
Cobalt Share
Search vendor "Ashlar-Vellum" for product "Cobalt Share"
< 12.6.1204.204
Search vendor "Ashlar-Vellum" for product "Cobalt Share" and version " < 12.6.1204.204"
en
Affected