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No exploitation reportedFix available

CVE-2021-26260

No exploitation reported by the sources we read.

  • Published2021-06-08
  • Fixed in3.0.1
  • WeaknessCWE-190 · CWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR. This is a different flaw from CVE-2021-23215.

Timeline

dates in UTC
  1. 2021-06-0812:15CVE publishedNVD

Versions per branch

NVD
Openexr
BranchAffectedFixed in
3.0< 3.0.13.0.1
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
10.0= 10.0no fix published
11.0= 11.0no fix published
Fedoraproject fedora
BranchAffectedFixed in
33.x= 33no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • openexrUbuntu:Pro:22.04:LTSall versions · fixed in 2.5.7-1ubuntu0.1~esm1
  • openexrUbuntu:Pro:20.04:LTSall versions · fixed in 2.3.0-6ubuntu0.5+esm1
  • openexrUbuntu:Pro:16.04:LTSall versions · fixed in 2.2.0-10ubuntu2.6+esm1
  • openexrUbuntu:18.04:LTSall versions · fixed in 2.2.0-11.1ubuntu1.7
  • openexrSUSE:Linux Enterprise Module for Desktop Applications 15 SP3all versions · fixed in 2.2.1-3.27.1
  • openexrSUSE:Linux Enterprise Module for Desktop Applications 15 SP2all versions · fixed in 2.2.1-3.27.1
  • openexropenSUSE:Leap 15.2all versions · fixed in 2.2.1-lp152.7.14.1
  • openexrMageia:8all versions · fixed in 2.5.7-1.mga8

20 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Openexr to 3.0.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.5read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • CNAweakness (CWE)CWE-400known since 2026-10-23
  • NVDweakness (CWE)CWE-190read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2021-06-08
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-mr39-xfw3-r82c

Frequently asked questions

What is CVE-2021-26260?

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR. This is a different flaw from CVE-2021-23215.

Is CVE-2021-26260 actively exploited?

Active exploitation of CVE-2021-26260 has not been confirmed. Its EPSS score was 1.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26260?

CVE-2021-26260 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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