CVE-2026-34544

EUVD-2026-18060
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 15.72%
Affected Products (NVD)
VendorProductVersion
openexropenexr
3.2.0 ≤
𝑥
< 3.2.7
openexropenexr
3.3.0 ≤
𝑥
< 3.3.9
openexropenexr
3.4.0 ≤
𝑥
< 3.4.8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openexr
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openexr
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
not-affected
xenial
not-affected
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
OpenEXR
Amazon Linux 2
0:1.7.1-8.amzn2.0.5
fixed
OpenEXR-debuginfo
Amazon Linux 2
0:1.7.1-8.amzn2.0.5
fixed
OpenEXR-devel
Amazon Linux 2
0:1.7.1-8.amzn2.0.5
fixed
OpenEXR-libs
Amazon Linux 2
0:1.7.1-8.amzn2.0.5
fixed
openexr
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed
openexr-debuginfo
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed
openexr-debugsource
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed
openexr-devel
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed
openexr-libs
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed
openexr-libs-debuginfo
Amazon Linux 2023
0:3.1.5-1.amzn2023.0.8
fixed