CVE-2026-59983: academysoftwarefoundation openexr Out-of-bounds Read
Vulnerability summary
CVE-2026-59983 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in academysoftwarefoundation openexr. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 25-08-2026PublishedVulnerability first disclosed.
- 25-08-2026Last modifiedVulnerability information updated.
Description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to an out-of-bounds read. The vulnerability is reached when a crafted uncompressed deep-tile EXR causes the sample-count table size calculation in OpenEXRCore decoding.c to wrap before unpack_sample_table() iterates over the full attacker-controlled tile dimensions, allowing denial of service. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
-0.01 pp
From 0.18% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Academysoftwarefoundation1 product
- openexr< 3.2.11 | ≥ 3.3.0, < 3.3.13 | ≥ 3.4.0, < 3.4.14
Debian1 product
- openexrAll versions (No fix recorded) | < 3.4.14-0.1
Ubuntu1 product
- openexrAll versions (No fix recorded)
3 vendors · 3 products
References
7 links- github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p42q-g5c9-mh9wX Refsource CONFIRMREPORT
