CVE-2026-42216

CRITICAL

9.1

CVSS v3

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, IDManifest::init() reconstructs strings from a prefix-compressed representation. If the previous string is longer than 255 bytes, the next string is expected to begin with a 2-byte prefix length. The code reads stringList[i][0] and stringList[i][1] without checking that the current string has at least two bytes. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.

CWE-125Out-of-bounds Read CWE-130

How to fix

Remediation Available

openexrRocky

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexrRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

openexr-debuginfoRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

openexr-debuginfoRocky

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexr-debugsourceRocky

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexr-debugsourceRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

openexr-develRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

openexr-develRocky

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexr-libsRocky

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexr-libsRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

openexr-libs-debuginfoRocky

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

openexr-libs-debuginfoRed Hat / RHEL

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.10-8.el10_2.3RHSA-2026:38499

Fixed in:0:3.1.10-8.el10_0.3RHSA-2026:39024

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_6.3RHSA-2026:39025

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

Fixed in:0:3.1.1-2.el9_2.4RHSA-2026:39027

Fixed in:0:3.1.1-2.el9_4.4RHSA-2026:39026

Fixed in:0:3.1.1-3.el9_8.3RHSA-2026:38498

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Exploit Intelligence

0.46%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Exploit1

github.com

Other references9

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2023-21769	High	7.5	89%	-	Fix

Common questions

How do I fix CVE-2026-42216?

Published advisories record a fix for 12 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-42216 being actively exploited?

Not that we know of. CVE-2026-42216 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.

How severe is CVE-2026-42216?

CVE-2026-42216 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-42216 affect?

Published advisories record a fix for openexr (Rocky), openexr (Red Hat / RHEL), openexr-debuginfo (Red Hat / RHEL), openexr-debuginfo (Rocky), and 8 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-42216

Markdown

[![CVE-2026-42216](https://tridentstack.com/cve/badge/CVE-2026-42216.svg)](https://tridentstack.com/cve/CVE-2026-42216)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-42216"><img src="https://tridentstack.com/cve/badge/CVE-2026-42216.svg" alt="CVE-2026-42216"></a>

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See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.