Local memory corruption via signed DDS index overflow
Published May 1, 2026 · Updated May 1, 2026
Out-of-bounds write in OpenImageIO 3.2.0.1-dev allows local users to corrupt process memory by opening a crafted DDS image. DDSInput::internal_readimg evaluates attacker-controlled pixel-index products as signed 32-bit integers before widening them, turning an overflowed negative index into a size_t value near SIZE_MAX for the destination write. Exploitation requires a vulnerable tool or consuming application to decode the file; the public PoC demonstrates a process crash, while arbitrary code execution is not established.
Summary
What happened
Out-of-bounds write in OpenImageIO 3.2.0.1-dev allows local users to corrupt process memory by opening a crafted DDS image. DDSInput::internal_readimg evaluates attacker-controlled pixel-index products as signed 32-bit integers before widening them, turning an overflowed negative index into a size_t value near SIZE_MAX for the destination write. Exploitation requires a vulnerable tool or consuming application to decode the file; the public PoC demonstrates a process crash, while arbitrary code execution is not established.
The record
- CVE
- CVE-2026-7582
- Published
- May 1, 2026
- Updated
- May 1, 2026
- Vendor
- Academy Software Foundation
- Product
- OpenImageIO
- Classifications
- CWE-787, CWE-119, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 1, 2026CVE publishedPublication date reported by the CVE source.
- May 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=3.2.0.1-dev
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
- oiio_ddsinput-readimg crafted DDS PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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