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CVE-2026-44663

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, an integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp leads to a heap-buffer overflow when decoding a crafted HTJ2K-compressed EXR file. decode->channels[i].width (int32_t) is multiplied by bytes_per_element in 32-bit signed arithmetic. With large widths (e.g., >= 536870912 for FLOAT data), this overflows, produci
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:10576772b33efc2e6d494ede9f9ee0cd85042dfff0fa465653f6dcc52dc9b5bd
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:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /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:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.11"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/cna/metrics/0/cvssV3_1

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:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /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:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /containers/adp/0/references/0
{"name":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55ec7964fdac4fa80fd9fedcf70a3ff896eab438f2025c2d043f74b77aedda50 · sha256:b2d1891e3d7bba73… · /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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