CVE-2025-65086 | BDVDB-2026-332255 Detail

Ashlar-VellumCobalt

Description#

An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to execute arbitrary code when a specially crafted VC6 file is being parsed.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-787 Out-of-bounds Write

References#

https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-01

Exploit#

No public exploit known

History#

Version 12026-05-12Record published in the CVE List.

Published

Published: 2026-05-12
Last modified: 2026-05-12

Vendor information

Vendor: Ashlar-Vellum
Product: Cobalt

All Ashlar-Vellum vulnerabilities

Score

8.4 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 5.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 12.6.1204.216
Fixed
Not stated

Scoring System

CVSS v4.0

8.4 High

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	Active
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).