Code execution via AR parser type confusion
Published Sep 17, 2025 · Updated Sep 17, 2025
Type confusion in the AR file parser in Ashlar-Vellum Cobalt 12 SP1 allows remote attackers to execute code via a crafted AR file. The parser fails to validate user-supplied AR data before accessing a resource through an incompatible type. Exploitation requires the target to open a malicious file or visit a malicious page, and resulting code runs in the current process.
Summary
What happened
Type confusion in the AR file parser in Ashlar-Vellum Cobalt 12 SP1 allows remote attackers to execute code via a crafted AR file. The parser fails to validate user-supplied AR data before accessing a resource through an incompatible type. Exploitation requires the target to open a malicious file or visit a malicious page, and resulting code runs in the current process.
The record
- CVE
- CVE-2025-7999
- Published
- Sep 17, 2025
- Updated
- Sep 17, 2025
- Vendor
- Ashlar-Vellum
- Product
- Cobalt
- Classifications
- CWE-843, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 17, 2025CVE publishedPublication date reported by the CVE source.
- Sep 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=12 SP1
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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