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Vulnerability record · CVE-2025-12839 · published 23 December 2025

CVE-2025-12839: Openexr heap-based buffer overflow vulnerability

Openexr · Openexr

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.

7.8 CVSS 3.0 High EPSS 0.19% · top 91.9% CWE-122 · Heap-based buffer overflow
7.8CVSS 3.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zerodayinitiative.com/advisories/ZDI-25-990/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2023-5841Openexr heap-based buffer overflow vulnerabilityDue to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX ima…EPSS 1.3%8.8CVE-2026-42216Openexr out-of-bounds read vulnerabilityOpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From…EPSS 0.71%8.8CVE-2026-41142Openexr integer overflow vulnerabilityOpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From…EPSS 0.73%8.8CVE-2021-23169Openexr out-of-bounds write vulnerabilityA heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1. An attacker could use this flaw to execute …EPSS 2.3%8.8CVE-2017-9111Openexr vulnerabilityIn OpenEXR 2.2.0, an invalid write of size 8 in the storeSSE function in ImfOptimizedPixelReading.h could cause the application to crash or execute a…EPSS 3.2%8.8CVE-2017-9113Openexr vulnerabilityIn OpenEXR 2.2.0, an invalid write of size 1 in the bufferedReadPixels function in ImfInputFile.cpp could cause the application to crash or execute a…EPSS 3.1%8.8CVE-2017-9115Openexr vulnerabilityIn OpenEXR 2.2.0, an invalid write of size 2 in the = operator function in half.h could cause the application to crash or execute arbitrary code.EPSS 3.3%8.7CVE-2026-34543Openexr use of uninitialized resource vulnerabilityOpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From…EPSS 0.52%

Source: NIST National Vulnerability Database (record CVE-2025-12839), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.