01 Record

CVE-2026-59186

OpenEXR: Heap out-of-bounds write in TiledRgbaInputFile via integer overflow on 32-bit (ILP32) builds

HighPUBLISHEDCNA: GitHub_M

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

View raw JSON

02 Description

OpenEXR: Heap out-of-bounds write in TiledRgbaInputFile via integer overflow on 32-bit (ILP32) builds

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 19.3% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-09-09.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-08-25 16:35Z2 MO AGO

Last updated

2026-08-25 18:18Z2 MO AGO

Reserved

2026-07-02

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Weaknesses

CWE-122Heap-based Buffer OverflowVariant
CWE-190Integer Overflow or WraparoundBase
CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

62767b3e64a40070c205e2dcacb30234ffcb74a295bb4f2a4845d04b63fa10ee

05 Affected products

VendorProductVersionsPlatforms

AcademySoftwareFoundationopenexr< 3.2.11, >= 3.3.0, < 3.3.13, >= 3.4.0, < 3.4.14—

06 References

github.comhttps://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-f667-c4wm-c8gqx_refsource_CONFIRM
github.comhttps://github.com/AcademySoftwareFoundation/openexr/commit/71907b44ce9a1b05bf3934b8a7821752750731abx_refsource_MISC
github.comhttps://github.com/AcademySoftwareFoundation/openexr/commit/904141d3a1f86327ad1e2b93fc92ce2dd5881d34x_refsource_MISC
github.comhttps://github.com/AcademySoftwareFoundation/openexr/commit/b1a5887372772d79328f4eb42b7f86352a38170bx_refsource_MISC

07 Fixed in

AlmaLinux 8

OpenEXR-devel
Fixed in 2.2.0-12.el8_10.3
OpenEXR-libs
Fixed in 2.2.0-12.el8_10.3

CloudLinux 8

OpenEXR-devel
Fixed in 2.2.0-12.el8_10.3
OpenEXR-libs
Fixed in 2.2.0-12.el8_10.3

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Debian 12

openexr
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

openexr
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

openexr
Fixed in 3.4.14-0.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.