# Openexr vulnerabilities

Source: https://junglewise.ai/threats/technologies/openexr-openexr  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/openexr-openexr.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 10 vulnerabilities in Openexr: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42217, was published on 7 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 10 (1 critical, 0 exploited in the wild)

## About Openexr

Open-source library for reading and writing high dynamic range image files.

## Latest Openexr vulnerabilities

- [CVE-2026-42217: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-42217-openexr-provides-the-specification-and-reference-implementation) (critical, CVSS 9.8, published 7 May 2026)
- [CVE-2026-40250: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-40250-openexr-provides-the-specification-and-reference-implementation) (high, CVSS 7.1, published 21 Apr 2026)
- [CVE-2026-39886: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-39886-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 5.3, published 21 Apr 2026)
- [CVE-2026-34380: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-34380-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 5.9, published 6 Apr 2026)
- [CVE-2026-34378: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-34378-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 6.5, published 6 Apr 2026)
- [CVE-2026-34544: PYSEC-2026-2847 - OpenEXR: integer overflow to OOB write in uncompress_b44_impl()](https://junglewise.ai/threats/cve-2026-34544-openexr-integer-overflow-to-oob-write-in-uncompress-b44-impl) (high, CVSS 7.3, published 1 Apr 2026)
- [CVE-2026-34543: OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)](https://junglewise.ai/threats/cve-2026-34543-openexr-heap-information-disclosure-in-pxr24-decompression-via) (high, CVSS 7.5, published 1 Apr 2026)
- [CVE-2025-12840: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12840-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)
- [CVE-2025-12839: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12839-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)
- [CVE-2025-12495: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12495-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)

## Most severe Openexr vulnerabilities

- [CVE-2026-42217: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-42217-openexr-provides-the-specification-and-reference-implementation) (critical, CVSS 9.8, published 7 May 2026)
- [CVE-2025-12840: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12840-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)
- [CVE-2025-12839: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12839-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)
- [CVE-2025-12495: Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability…](https://junglewise.ai/threats/cve-2025-12495-academy-software-foundation-openexr-exr-file-parsing-heap-based) (high, CVSS 7.8, published 23 Dec 2025)
- [CVE-2026-34543: OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)](https://junglewise.ai/threats/cve-2026-34543-openexr-heap-information-disclosure-in-pxr24-decompression-via) (high, CVSS 7.5, published 1 Apr 2026)
- [CVE-2026-34544: PYSEC-2026-2847 - OpenEXR: integer overflow to OOB write in uncompress_b44_impl()](https://junglewise.ai/threats/cve-2026-34544-openexr-integer-overflow-to-oob-write-in-uncompress-b44-impl) (high, CVSS 7.3, published 1 Apr 2026)
- [CVE-2026-40250: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-40250-openexr-provides-the-specification-and-reference-implementation) (high, CVSS 7.1, published 21 Apr 2026)
- [CVE-2026-34378: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-34378-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 6.5, published 6 Apr 2026)
- [CVE-2026-34380: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-34380-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 5.9, published 6 Apr 2026)
- [CVE-2026-39886: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for…](https://junglewise.ai/threats/cve-2026-39886-openexr-provides-the-specification-and-reference-implementation) (medium, CVSS 5.3, published 21 Apr 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Openexr vulnerabilities", https://junglewise.ai/threats/technologies/openexr-openexr, 9 November 2026.