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CVE-2026-34544

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2587d7980442657d8b6e2a50ceb840fcfa6cda1d5c87bd490b49964a158d3dd8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":8.4,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/AcademySoftwareFoundation/openexr/commit/35e7aa35e22c1975606be86e859f31cc1fc598ee","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/commit/35e7aa35e22c1975606be86e859f31cc1fc598ee"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/references/1
{"name":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/references/2
{"name":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:620b5f1d1ffe7de7528582ab14da39a60c224778dfcb4b108e350891e04577f0 · sha256:c5ffbd60637d3229… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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