OpenEXR: OpenEXRUtil FlatImageChannel row nonzero dataWindow heap OOB write
Priority LOW 31CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allow a crafted EXR with a nonzero dataWindow.min to make TypedFlatImageChannel::row() return an invalid heap pointer, causing out-of-bounds or use-after-free writes. This occurs when an application writes rows through FlatHalfChannel::row(). Affected consumers are tools, converters, render pipeline components, or image-processing services that accept untrusted EXR files and use FlatHalfChannel::row() on loaded images. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00218 12th percentileScored 2026-11-07
Fix Fixed openexr (AcademySoftwareFoundation): 3.2.11, 3.3.13, 3.4.14Red Hat: 3 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AcademySoftwareFoundation | openexr | before 3.2.11; 3.3.0 to before 3.3.13; 3.4.0 to before 3.4.14 | 3.2.11, 3.3.13, 3.4.14 | Patch available | CNA |
- openexr VendorAcademySoftwareFoundation Affected before 3.2.11; 3.3.0 to before 3.3.13; 3.4.0 to before 3.4.14 Fixed in 3.2.11, 3.3.13, 3.4.14 Patch available CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* | — | — | Academy Software Foundation |
- cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* Versions — — ·Academy Software Foundation
Remediation
- Fix · CNA openexr (AcademySoftwareFoundation) Fixed in 3.2.11, 3.3.13, 3.4.14
Red Hat 3 advisories
- RHSA-2026:86983 Released 2026-10-21 · Red Hat rating Importantopenexr security update
- Red Hat Enterprise Linux AppStream (v. 9) openexr-3.1.1-3.el9_8.5, openexr-libs-3.1.1-3.el9_8.5
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) openexr-devel-3.1.1-3.el9_8.5
- RHSA-2026:84796 Released 2026-10-19 · Red Hat rating Importantopenexr security update
- Red Hat Enterprise Linux AppStream (v. 10) openexr-3.1.10-8.el10_2.5, openexr-libs-3.1.10-8.el10_2.5
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) openexr-devel-3.1.10-8.el10_2.5
- RHSA-2026:82345 Released 2026-10-13 · Red Hat rating ImportantOpenEXR security update
- Red Hat Enterprise Linux AppStream (v. 8) OpenEXR-2.2.0-12.el8_10.3, OpenEXR-libs-2.2.0-12.el8_10.3
- Red Hat Enterprise Linux CRB (v. 8) OpenEXR-devel-2.2.0-12.el8_10.3
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:84796 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:82345 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:86983 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:82345 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:84796 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:86983 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59184
- 2026-10-14 Fix available: RHSA-2026:82345 · Red Hat
- 2026-10-15 Fix available: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84796 · Red Hat
- 2026-10-20 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86983 · Red Hat
- 2026-10-21 Fix available: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · Red Hat
References
Other 4
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-pqp9-558c-453q
- https://github.com/AcademySoftwareFoundation/openexr/commit/37f03b6ed90f3dd9910f31de3a40f25f2bc2aca1
- https://github.com/AcademySoftwareFoundation/openexr/commit/55b7958ecb5ac32c427ff39c1e063f6f7bbee77c
- https://github.com/AcademySoftwareFoundation/openexr/commit/aef02224ba282a802de65d16c49c1cdb82089dec
More AcademySoftwareFoundation vulnerabilities
- TI-2026-30739 OpenColorIO vulnerable to stack buffer overflow via unbounded `sscanf %s` in Spi3D (.spi3d) LUT parser CVSS 4.0HIGH 8.4
- TI-2026-38605 OpenEXR: Unhandled assert abort in HTJ2K decoder via crafted QCD marker (DoS) CVSS 4.0HIGH 7.1
- TI-2026-48281 OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union CVSS 3.1HIGH 7.1
- TI-2026-48279 OpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collision CVSS 3.1HIGH 7.1
- TI-2026-42768 OpenEXR: Heap OOB read in SampleCountChannel row when using nonzero dataWindow CVSS 3.1HIGH 7.1
- TI-2026-42338 OpenEXR: Out-of-bounds read in DeepImageChannel::row() for non-zero dataWindow origin CVSS 3.1HIGH 7.1
Sources
- CVE-2026-59184 · CVE Program
- CVE-2026-59184 · NVD
- FIRST EPSS
- CVE-2026-59184 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences