CVE-2026-40244
Last modified
CVE-2026-40244 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openexr | Openexr | >= 3.2.0, < 3.2.8 |
| Openexr | Openexr | >= 3.3.0, < 3.3.10 |
| Openexr | Openexr | >= 3.4.0, < 3.4.10 |
References
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhxMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-40244?
How severe is CVE-2026-40244?
How do I fix CVE-2026-40244?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-40228In systemd 259, systemd-journald can send ANSI escape sequen…3.3
- CVE-2026-40229Helpy contains a stored cross-site scripting vulnerability i…5.4
- CVE-2026-40230Helpy contains a stored cross-site scripting vulnerability i…5.4
- CVE-2026-4024The Royal Addons for Elementor plugin for WordPress is vulne…5.3
- CVE-2026-40242Arcane is an interface for managing Docker containers, image…6.5
- CVE-2026-40243Incus is a system container and virtual machine manager. In …4.8
- CVE-2026-40245Free5GC is an open-source Linux Foundation project for 5th g…7.5
- CVE-2026-40246free5GC is an open-source implementation of the 5G core netw…7.5
- CVE-2026-40247free5GC is an open-source implementation of the 5G core netw…7.5
- CVE-2026-40248free5GC is an open-source implementation of the 5G core netw…7.5
- CVE-2026-40249free5GC is an open-source implementation of the 5G core netw…5.3
- CVE-2026-4025The PrivateContent Free plugin for WordPress is vulnerable t…6.4
Are you affected by CVE-2026-40244?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST