7.5

CVE-2025-64181: academysoftwarefoundation openexr Use of Uninitialized Variable

CVSS: 7.5v3.1HighAnalyzed
AliasesSUSE-SU-2025:21014-1GHSA-3h9h-qfvw-98hqPYSEC-2026-2843
Published 10-11-2025Last modified 12-11-2025
Open JSON

Vulnerability summary

CVE-2025-64181 is a high (CVSS 7.5) Use of Uninitialized Variable vulnerability in academysoftwarefoundation openexr. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.41%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2025:15741-1

Timeline

  1. 10-11-2025
    PublishedVulnerability first disclosed.
  2. 12-11-2025
    Last modifiedVulnerability information updated.

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 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.

CVSS metrics

8 scores · 5 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.03 pp

From 0.38% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Openexr

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Suse2 products
  • openexr&distro=SUSE Linux Enterprise Server 16.0< 3.2.2-160000.3.1
  • openexr&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 3.2.2-160000.3.1
Academysoftwarefoundation1 product
  • openexr≥ 3.3.0, < 3.3.6 | ≥ 3.4.0, < 3.4.3
Debian1 product
  • openexrAll versions (No fix recorded) | < 3.4.6+ds-1
Openexr1 product
  • openexr≥ 3.3.0, < 3.3.6 | ≥ 3.4.0, < 3.4.3
Opensuse1 product
  • openexr&distro=openSUSE Leap 16.0< 3.2.2-160000.3.1
PyPI1 product
  • openexr≥ 3.3.0, < 3.3.6 | ≥ 3.4.0, < 3.4.3
Ubuntu1 product
  • openexrAll versions (No fix recorded)

7 vendors · 8 products

References

17 links
Show all 17 references