AcademySoftwareFoundation OpenEXR up to 3.3.5/3.4.2 EXR File Parser openexr_exrcheck_fuzzer uninitialized variable

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in AcademySoftwareFoundation OpenEXR up to 3.3.5/3.4.2. This affects the function openexr_exrcheck_fuzzer of the component EXR File Parser. This manipulation causes uninitialized variable. This vulnerability is handled as CVE-2025-64181. It is possible to launch the attack on the local host. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in AcademySoftwareFoundation OpenEXR up to 3.3.5/3.4.2. It has been declared as problematic. Affected by this vulnerability is the function openexr_exrcheck_fuzzer of the component EXR File Parser. The manipulation with an unknown input leads to a uninitialized variable vulnerability. The CWE definition for the vulnerability is CWE-457. The code uses a variable that has not been initialized, leading to unpredictable or unintended results. As an impact it is known to affect 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. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-64181 since 10/28/2025. The exploitation appears to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 274729 (Linux Distros Unpatched Vulnerability : CVE-2025-64181), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.3.6 or 3.4.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (274729). Several companies clearly confirm that VulDB is the primary source for best 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: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Uninitialized variable
CWE: CWE-457 / CWE-453
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 274729
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-64181

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenEXR 3.3.6/3.4.3

Timelineinfo

10/28/2025 CVE reserved
11/11/2025 +14 days Advisory disclosed
11/11/2025 +0 days VulDB entry created
12/08/2025 +27 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-3h9h-qfvw-98hq
Status: Confirmed

CVE: CVE-2025-64181 (🔒)
GCVE (CVE): GCVE-0-2025-64181
GCVE (VulDB): GCVE-100-331801

Entryinfo

Created: 11/11/2025 07:48
Updated: 12/08/2025 17:35
Changes: 11/11/2025 07:48 (68), 11/11/2025 10:44 (1), 11/12/2025 00:46 (2), 12/08/2025 17:35 (13)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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