5.5

CVE-2026-59984: academysoftwarefoundation openexr Out-of-bounds Write

CVSS: 5.5v3.1MediumDeferred
AliasesUBUNTU-CVE-2026-59984DEBIAN-CVE-2026-59984
Published 25-08-2026Last modified 25-08-2026
Open JSON

Vulnerability summary

CVE-2026-59984 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in academysoftwarefoundation openexr. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
OPENSUSE-SU-2026:11612-1OPENSUSE-SU-2026:12184-1OPENSUSE-SU-2026:21737-1SUSE-SU-2026:23604-1

Timeline

  1. 25-08-2026
    PublishedVulnerability first disclosed.
  2. 25-08-2026
    Last modifiedVulnerability information updated.

Description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to an out-of-bounds write. When a crafted B44-compressed scanline EXR causes the logical scratch size to truncate before allocation and uncompress_b44_impl() writes using the attacker-controlled channel width, allowing denial of service and memory corruption. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

-0.01 pp

From 0.18% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Academysoftwarefoundation1 product
  • openexr≥ 3.1.0, < 3.2.11 | ≥ 3.3.0, < 3.3.13 | ≥ 3.4.0, < 3.4.14
Debian1 product
  • openexrAll versions (No fix recorded) | < 3.4.14-0.1
Ubuntu1 product
  • openexrAll versions (No fix recorded)

3 vendors · 3 products

References

10 links