CVE-2025-64181

What it is

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-11-10 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 09:53 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 2.0 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2025-11-10 22:15 UTC

Last modified

2026-06-17 09:53 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-457

Record status

Analyzed

Affected

• Openexr < 3.3.6
• Openexr < 3.4.3

Attack profile CVSS 4.0 · 2.0

Attack vector

Local

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2025-64181.md and follow it. Check whether this project is affected by CVE-2025-64181. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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