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Fencer Vulns
medium 5.5

CVE-2021-3605 json

There's a flaw in OpenEXR's rleUncompress functionality in versions prior to 3.0.5.

published 2021-08-25 5 y ago modified 2026-07-18 3 mo ago also EUVD-2021-26909 , JLSEC-2026-129

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

There's a flaw in OpenEXR's rleUncompress functionality in versions prior to 3.0.5. An attacker who is able to submit a crafted file to an application linked with OpenEXR could cause an out-of-bounds read. The greatest risk from this flaw is to application availability.

Patch / fix

  • julia OpenEXR_jll 3.1.1+0
  • openexr openexr 3.0.5
  • openexr Debian 14, Debian 13, Debian 12 2.5.7-1

debian advisories DEBIAN-CVE-2021-3605

  • openexr Ubuntu 18.04 LTS 2.2.0-11.1ubuntu1.7
  • openexr Ubuntu Pro 16.04 LTS 2.2.0-10ubuntu2.6+esm1
  • openexr Ubuntu Pro 20.04 LTS 2.3.0-6ubuntu0.5+esm1

ubuntu advisories UBUNTU-CVE-2021-3605

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openexr SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +12 more 2.1.0-6.34.1
  • openexr SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +12 more 2.2.1-3.32.1
  • OpenEXR SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 1.6.1-83.17.25.1

suse advisories SUSE-SU-2021:2159-1SUSE-SU-2021:2158-1SUSE-SU-2021:14757-1

  • openexr openSUSE Tumbleweed 3.1.1-2.2
  • openexr openSUSE Leap 15.3 2.2.1-3.32.1
  • openexr openSUSE Leap 15.2 2.2.1-lp152.7.17.1

opensuse advisories openSUSE-SU-2024:11117-1openSUSE-SU-2021:2158-1openSUSE-SU-2021:0925-1

  • openexr Arch Linux 2.4.1-1

arch linux advisories AVG-2107

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3605 updated cvss 5.5

OpenEXR: Heap buffer overflow in the rleUncompress function

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 OpenEXR, OpenEXR-libs
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 openexr, openexr-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia OpenEXR_jll
<3.1.1+0
3.1.1+0

Affected products

  • n/a OpenEXR

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-125 Out-of-bounds Read

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.