Local memory disclosure via overlong MDL bone name
Published Jun 1, 2026 · Updated Jun 1, 2026
Out-of-bounds read in Assimp 6.0.0 through 6.0.4 allows local users to disclose process memory via a malformed Half-Life 1 MDL file. The loader accepts a bone name that fills aiString::data[1024], then copies the unterminated aiString with a 1,023-byte memcpy past its buffer. Exploitation requires local access and parsing of the crafted file; the demonstrated result is a 1,023-byte read from adjacent global memory.
Summary
What happened
Out-of-bounds read in Assimp 6.0.0 through 6.0.4 allows local users to disclose process memory via a malformed Half-Life 1 MDL file. The loader accepts a bone name that fills aiString::data[1024], then copies the unterminated aiString with a 1,023-byte memcpy past its buffer. Exploitation requires local access and parsing of the crafted file; the demonstrated result is a 1,023-byte read from adjacent global memory.
The record
- CVE
- CVE-2026-10233
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- Open Asset Import Library
- Product
- Assimp
- Classifications
- CWE-119, CWE-125, T1203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 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=6.0.0
- Affected versionversion=6.0.1
- Affected versionversion=6.0.2
- Affected versionversion=6.0.3
- Affected versionversion=6.0.4
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.
Weakness, pattern, technique
Public exploit references
- Malformed Half-Life 1 MDL proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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