CVE catalog

CVE-2026-26981

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Feb 24, 2026, 2:26:16 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.60% · Oct 27, 2026

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 3.3.6 and 3.4.0 through 3.4.4, a heap-buffer-overflow (OOB read) occurs in the `istream_nonparallel_read` function in `ImfContextInit.cpp` when parsing a malformed EXR file through a memory-mapped `IStream`. A signed integer subtraction produces a negative value that is implicitly converted to `size_t`, resulting in a massive length being passed to `memcpy`. Versions 3.3.7 and 3.4.5 contain a patch.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	openexr	sid	`3.4.16+ds-1`	not affected
Debian	openexr	forky	`3.4.16+ds-1`	not affected
Debian	openexr	trixie	`3.1.13-2`	not affected
Debian	openexr	bookworm	`3.1.5-5`	not affected
Opensuse	openexr	tumbleweed	`3.4.5-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	openexr	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	openexr	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	openexr	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	openexr	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Opensuse	openexr	rpm	tumbleweed	`3.4.5-1.1`	Not reported	OPENSUSE-SU-2026:10272-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[libIex-3_4-33]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libIex-3_4-33-32bit]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libIex-3_4-33-x86-64-v3]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libIlmThread-3_4-33]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libIlmThread-3_4-33-32bit]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libIlmThread-3_4-33-x86-64-v3]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXR-3_4-33]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXR-3_4-33-32bit]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXR-3_4-33-x86-64-v3]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRCore-3_4-33]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRCore-3_4-33-32bit]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRCore-3_4-33-x86-64-v3]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRUtil-3_4-33]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRUtil-3_4-33-32bit]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[libOpenEXRUtil-3_4-33-x86-64-v3]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[openexr-devel]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed
[openexr-doc]Unknown
Source package: [openexr]
Details (1)
- 3.4.14-1.1 · noarch · tumbleweed
  Unknown · Fixed: 3.4.5-1.1
  Version impact unknown
  nvd · openexr · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libopenexr-3-1-30]Not affected
Source package: [openexr]
Details (2)
- 3.1.5-5 · amd64 · bookworm
  Not affected
  nvd · openexr · debian · bookworm
- 3.1.5-5 · arm64 · bookworm
  Not affected
  nvd · openexr · debian · bookworm
[libopenexr-dev]Not affected
Source package: [openexr]
Details (2)
- 3.1.5-5 · amd64 · bookworm
  Not affected
  nvd · openexr · debian · bookworm
- 3.1.5-5 · arm64 · bookworm
  Not affected
  nvd · openexr · debian · bookworm
[libopenexr-doc]Not affected
Source package: [openexr]
Details (2)
- 3.1.5-5 · all · bookworm
  Not affected
  nvd · openexr · debian · bookworm
- 3.1.5-5 · all · bookworm
  Not affected
  nvd · openexr · debian · bookworm

Next results

Observed: Oct 24, 2026, 12:38:25 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]