AcademySoftwareFoundation OpenEXR up to 3.2.8/3.3.10/3.4.10 EXR File IDManifest::init out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in AcademySoftwareFoundation OpenEXR up to 3.2.8/3.3.10/3.4.10. This affects the function IDManifest::init of the component EXR File Handler. Performing a manipulation results in out-of-bounds. This vulnerability was named CVE-2026-42216. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in AcademySoftwareFoundation OpenEXR up to 3.2.8/3.3.10/3.4.10. This affects the function IDManifest::init of the component EXR File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-42216 since 04/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 316840 (Amazon Linux 2023 : openexr, openexr-devel, openexr-libs (ALAS2023-2026-1713)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.2.9, 3.3.11 or 3.4.11 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (316840) and EUVD (EUVD-2026-28298). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316840
Nessus Name: Amazon Linux 2023 : openexr, openexr-devel, openexr-libs (ALAS2023-2026-1713)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenEXR 3.2.9/3.3.11/3.4.11

Timelineinfo

04/25/2026 CVE reserved
05/07/2026 +12 days Advisory disclosed
05/07/2026 +0 days VulDB entry created
07/02/2026 +56 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-65j8-95g9-jgj4
Status: Confirmed

CVE: CVE-2026-42216 (🔒)
GCVE (CVE): GCVE-0-2026-42216
GCVE (VulDB): GCVE-100-361803
EUVD: 🔒

Entryinfo

Created: 05/07/2026 07:43
Updated: 07/02/2026 19:00
Changes: 05/07/2026 07:43 (69), 05/07/2026 08:10 (1), 05/28/2026 09:32 (2), 07/02/2026 19:00 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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