Which versions of Ashlar-Vellum Cobalt are affected by CVE-2025-65085?

Organizations using A Heap-based Buffer Overflow vulnerability face notable risk from CVE-2025-65085, a heap-based buffer overflow vulnerability rated CVSS 8.4.

How to fix or mitigate CVE-2025-65085?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Ashlar-Vellum Cobalt CVE-2025-65085

Q: What is the CVSS score of CVE-2025-65085?

CVE-2025-65085 has a CVSS 4.0 base score of 8.4 (High). CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

HIGH

Heap-based Buffer Overflow (CWE-122)

2025-11-25 ics-cert@hq.dhs.gov

Buffer Overflow RCE Heap Overflow

8.4

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:23 vuln.today

CVE Published

Nov 25, 2025 - 18:15 nvd

HIGH 8.4

DescriptionCVE.org

A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.207 and prior that could allow an attacker to disclose information or execute arbitrary code.

AnalysisAI

Technical ContextAI

This vulnerability is classified under CWE-122. A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.207 and prior that could allow an attacker to disclose information or execute arbitrary code. Affected products include: Ashlar Argon, Ashlar Cobalt, Ashlar Cobalt Share, Ashlar Lithium, Ashlar Xenon.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.