CVE-2025-65086

Status: AnalyzedHigh (8.4)—

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.

CVSS

Version: 4.0
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
Base score: 8.4

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17%
Percentile among all scored CVEs: 5
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1203 Exploitation for Client Executionexecution95 %
Primary impactT1059 Command and Scripting Interpreterexecution90 %

Vector CVSS con UI:A (requiere interacción del usuario) y AV:L (acceso local) indica T1203 (explotación para ejecución en el cliente). CWE-787 (out-of-bounds write) en parseo de archivo VC6 permite ejecución arbitraria de código.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Restrict Web-Based Content Privileged Account Management Limit Software Installation Execution Prevention Behavior Prevention on Endpoint Disable or Remove Feature or Program

Affected technologies (5)

Ashlar — Argon Ashlar — Cobalt Ashlar — Cobalt Share Ashlar — Lithium Ashlar — Xenon

CWEs

CWE-787

References

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

Raw JSON (NVD)

Show

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