CVE-2021-26260

Publication date 8 June 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openexr	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Fixed 2.3.0-6ubuntu0.5+esm1
	18.04 LTS bionic	Fixed 2.2.0-11.1ubuntu1.7
	16.04 LTS xenial	Fixed 2.2.0-10ubuntu2.6+esm1
	14.04 LTS trusty	Not in release

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
openexr	Upstream: https://github.com/AcademySoftwareFoundation/openexr/pull/894/commits/36ea55a362558b08e7f5c3b04c6724eaad47b4e8

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4996-1
OpenEXR vulnerabilities
22 June 2021

USN-4996-2
OpenEXR vulnerabilities
22 June 2021

USN-5620-1
OpenEXR vulnerabilities
20 September 2022