Decoder crash via overflowing sample-table index
Published Aug 25, 2026 · Updated Aug 25, 2026
Integer overflow in OpenEXR 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allows attackers to crash decoders. OpenEXRCore's unpack_sample_table() multiplies 32-bit signed tile dimensions for row indexing, wrapping the pointer before the allocated sample table. A victim application must open a crafted deep tiled EXR file, the default unlimited image-size setting must permit it, and roughly 8.6 GB of memory must be available; the result is a process crash without attacker-controlled memory corruption.
Summary
What happened
Integer overflow in OpenEXR 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allows attackers to crash decoders. OpenEXRCore's unpack_sample_table() multiplies 32-bit signed tile dimensions for row indexing, wrapping the pointer before the allocated sample table. A victim application must open a crafted deep tiled EXR file, the default unlimited image-size setting must permit it, and roughly 8.6 GB of memory must be available; the result is a process crash without attacker-controlled memory corruption.
The record
- CVE
- CVE-2026-59183
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Vendor
- Academy Software Foundation
- Product
- OpenEXR
- Classifications
- CWE-190, T1204.002
- Attack vector
- local
- 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=>= 3.1.0, < 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
- GHSA-rqp5-pmwm-wj6x deep-tiled EXR proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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