Application crash or heap disclosure via row misaddressing
Published Aug 25, 2026 · Updated Aug 25, 2026
Out-of-bounds read in OpenEXRUtil before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allows attackers to crash applications. The accessor treats row indexes as 0-based while its internal base is offset for absolute dataWindow coordinates, so row(0) can point beyond the sample-count buffer. Exploitation requires an application to open an attacker-controlled deep EXR file and call row(); the result is a process crash or disclosure of adjacent heap values.
Summary
What happened
Out-of-bounds read in OpenEXRUtil before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allows attackers to crash applications. The accessor treats row indexes as 0-based while its internal base is offset for absolute dataWindow coordinates, so row(0) can point beyond the sample-count buffer. Exploitation requires an application to open an attacker-controlled deep EXR file and call row(); the result is a process crash or disclosure of adjacent heap values.
The record
- CVE
- CVE-2026-59981
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Vendor
- Academy Software Foundation
- Product
- OpenEXR
- Classifications
- CWE-125, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 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=< 3.2.11
- Affected versionversion=>= 3.3.0, < 3.3.13
- Affected versionversion=>= 3.4.0, < 3.4.14
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
- SampleCountChannel row proof-of-concept bundleproof of concept · demonstrated
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Technologies
Your stack
See the directory against your own environment.
Your stack
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