OpenEXR's Unbounded File Header Values can Lead to Out-Of-Memory Errors
Priority MEDIUM 54CWE-770Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In version 3.3.2, applications trust unvalidated dataWindow size values from file headers, which can lead to excessive memory allocation and performance degradation when processing malicious files. This is fixed in version 3.3.3.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed openexr (AcademySoftwareFoundation): 3.3.3OpenEXR (PyPI): 3.3.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 | 3.3.2 to before 3.3.3 | 3.3.3 | Patch available | CNA |
| — | OpenEXR (PyPI) | 3.3.2 to before 3.3.3 | 3.3.3 | Patch available | GHSA-x22w-82jp-8rvf |
- openexr VendorAcademySoftwareFoundation Affected 3.3.2 to before 3.3.3 Fixed in 3.3.3 Patch available CNA
- OpenEXR (PyPI) Vendor— Affected 3.3.2 to before 3.3.3 Fixed in 3.3.3 Patch available GHSA-x22w-82jp-8rvf
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openexr:openexr:3.3.2:*:*:*:*:*:*:* | 3.3.2 | Vulnerable | Academy Software Foundation |
- cpe:2.3:a:openexr:openexr:3.3.2:*:*:*:*:*:*:* Versions 3.3.2 Vulnerable ·Academy Software Foundation
Remediation
- Fix · CNA openexr (AcademySoftwareFoundation) Fixed in 3.3.3
- Fix · GHSA-x22w-82jp-8rvf OpenEXR (PyPI) Fixed in 3.3.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-48074
- 2026-10-03 Alias added: GHSA-x22w-82jp-8rvf
References
Exploit 2
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-2025-48074 · CVE Program
- CVE-2025-48074 · NVD
- FIRST EPSS
- GHSA-x22w-82jp-8rvf · GitHub Advisory Database · CC BY 4.0
- CVE-2025-48074 · Red Hat security data · CC BY 4.0
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