Is CVE-2025-12839 actively exploited?

CVE-2025-12839 has no public evidence of in-the-wild exploitation as of 2026-01-15.

What is the CVSS score for CVE-2025-12839?

CVE-2025-12839 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-12839?

Patch guidance is available from openexr security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-12839.

Fix CVE-2025-12839 - HIGH openexr openexr

Description

Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Academy Software Foundation OpenEXR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of EXR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27947.

CVSS Metrics

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-122

Metadata

Primary Vendor: OPENEXR
Published: 12/23/2025
Last Modified: 1/15/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

openexr : openexr

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-12839. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-12839

View on NIST NVD

CVE-2025-12839 vulnerability