CVE catalog
CVE-2026-34588
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.48% · Oct 25, 2026
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_exr_undo_piz() advances the working wavelet pointer with signed 32-bit arithmetic. Because nx, ny, and wcount are int, a crafted EXR file can make this product overflow and wrap. The next channel then decodes from an incorrect address. The wavelet decode path operates in place, so this yields both out-of-bounds reads and out-of-bounds writes. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | openexr | sid | 3.4.16+ds-1 | fixed |
| Debian | openexr | forky | 3.4.16+ds-1 | fixed |
| Debian | openexr | trixie | 3.1.13-2 | vulnerable |
| Debian | openexr | bookworm | 3.1.5-5 | vulnerable |
| Cpe | openexr | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | fixed |
| Cpe | libopenexr-3-1-30 | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | fixed |
| Cpe | libopenexr-dev | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | fixed |
| Cpe | libopenexr-doc | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | fixed |
| Cpe | openexr | Not reported | Not reported | vulnerable |
| Cpe | openexr | Not reported | 3.2.7 | fixed |
| Cpe | openexr | Not reported | 3.3.9 | fixed |
| Cpe | openexr | Not reported | 3.4.9 | fixed |
| Cpe | openexr | Not reported | 3.4.9 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openexr | source | sid | 3.4.14-0.1 | not yet assigned | Not reported | [1133188] |
| Debian | openexr | source | forky | 3.4.14-0.1 | not yet assigned | Not reported | [1133188] |
| Debian | openexr | source | trixie | (unfixed) | not yet assigned | Not reported | [1133188] |
| Debian | openexr | source | bookworm | (unfixed) | not yet assigned | Not reported | [1133188] |
| Cpe | openexr | cpe | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Cpe | libopenexr-3-1-30 | cpe | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Cpe | libopenexr-dev | cpe | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Cpe | libopenexr-doc | cpe | Not reported | 3.1.5-5.1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Cpe | openexr | cpe | Not reported | 3.2.7 | Not reported | Not reported | Not reported |
| Cpe | openexr | cpe | Not reported | 3.3.9 | Not reported | Not reported | Not reported |
| Cpe | openexr | cpe | Not reported | 3.4.9 | Not reported | Not reported | Not reported |
| Cpe | openexr | cpe | Not reported | 3.4.9 | Not reported | NVD-CVE-2026-34588 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libopenexr-3-1-30]Affected
Source package: [openexr]
Details (2)
3.1.5-5· amd64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
3.1.5-5· arm64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
- [libopenexr-dev]Affected
Source package: [openexr]
Details (2)
3.1.5-5· amd64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
3.1.5-5· arm64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
- [libopenexr-doc]Affected
Source package: [openexr]
Details (2)
3.1.5-5· all · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
3.1.5-5· all · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
- [openexr]Affected
Details (2)
3.1.5-5· amd64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
3.1.5-5· arm64 · bookwormAffected
nvd · openexr · debian · bookworm; nvd · openexr · debian · 12
[Debian 13 (Trixie)]
- [libopenexr-3-1-30]Affected
Source package: [openexr]
Details (2)
3.1.13-2· amd64 · trixieAffected
nvd · openexr · debian · 13
3.1.13-2· arm64 · trixieAffected
nvd · openexr · debian · 13
- [libopenexr-dev]Affected
Source package: [openexr]
Details (2)
3.1.13-2· amd64 · trixieAffected
nvd · openexr · debian · 13
3.1.13-2· arm64 · trixieAffected
nvd · openexr · debian · 13
- [libopenexr-doc]Affected
Source package: [openexr]
Details (2)
3.1.13-2· all · trixieAffected
nvd · openexr · debian · 13
3.1.13-2· all · trixieAffected
nvd · openexr · debian · 13
- [openexr]Affected
Details (2)
3.1.13-2· amd64 · trixieAffected
nvd · openexr · debian · 13
3.1.13-2· arm64 · trixieAffected
nvd · openexr · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:15887]
- [https://access.redhat.com/errata/RHSA-2026:15888]
- [https://access.redhat.com/errata/RHSA-2026:17656]
- [https://access.redhat.com/errata/RHSA-2026:17658]
- [https://access.redhat.com/errata/RHSA-2026:17659]
- [https://access.redhat.com/errata/RHSA-2026:17660]
- [https://access.redhat.com/errata/RHSA-2026:19146]
- [https://access.redhat.com/errata/RHSA-2026:19359]
- [https://access.redhat.com/errata/RHSA-2026:19587]
- [https://access.redhat.com/errata/RHSA-2026:30078]
- [https://access.redhat.com/errata/RHSA-2026:30087]
- [https://access.redhat.com/errata/RHSA-2026:30088]
- [https://access.redhat.com/errata/RHSA-2026:30089]
- [https://access.redhat.com/security/cve/CVE-2026-34588]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2455408]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10505-1.json]
- [https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7]
- [https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9]
- [https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9]
- [https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-588r-cr5c-w6hf]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-34588]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-34588]
- [https://security-tracker.debian.org/tracker/CVE-2026-34588]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34588.json]
- [https://ubuntu.com/security/notices/USN-8259-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1440.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]