What’s Vulnerable › Vulnerabilities

CVE-2025-48071: OpenEXR's Forged Unpacked Size can Lead to Heap-Based Buffer Overflow in Deep Scanline Parsing

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-31 · updated 2026-06-17
• Weakness: CWE-122

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.2 through 3.3.0, there is a heap-based buffer overflow during a write operation when decompressing ZIPS-packed deep scan-line EXR files with a maliciously forged chunk header. This is fixed in version 3.3.3.

Affected products

• AcademySoftwareFoundation openexr: from 3.3.0 before 3.3.3 — fixed in 3.3.3

How to fix

Upgrade to a fixed version: AcademySoftwareFoundation openexr 3.3.3. Check the vendor advisory for mitigations.

References

• https://github.com/AcademySoftwareFoundation/openexr/commit/916cc729e24aa16b86d82813f6e136340ab2876f
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.3
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h45x-qhg2-q375

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