CVE-2026-19781 Ashlar-Vellum Cobalt - Remote Code Execution

Ashlar-Vellum Cobalt contains a heap-based buffer overflow caused by improper validation of user-supplied data length in VS file parsing, letting remote attackers execute arbitrary code, exploit requires user interaction.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to the latest version of Ashlar-Vellum Cobalt.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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