Code execution via undisclosed out-of-bounds write
Published Nov 25, 2025 · Updated May 12, 2026
Out-of-bounds write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium CAD, and Cobalt Share 12.6.1204.216 and earlier allows code execution. CISA has not disclosed the affected component, input format, or exact operation that writes beyond its intended buffer. Successful exploitation requires active user interaction and can disclose application data or execute code in the application process.
Summary
What happened
Out-of-bounds write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium CAD, and Cobalt Share 12.6.1204.216 and earlier allows code execution. CISA has not disclosed the affected component, input format, or exact operation that writes beyond its intended buffer. Successful exploitation requires active user interaction and can disclose application data or execute code in the application process.
The record
- CVE
- CVE-2025-65084
- Published
- Nov 25, 2025
- Updated
- May 12, 2026
- Vendor
- Ashlar-Vellum
- Product
- Cobalt
- Classifications
- CWE-787, T1204
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 25, 2025CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=12.6.1204.216
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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