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CVE-2026-34545

A flaw was found in OpenEXR, an image storage format for the motion picture industry. An attacker can exploit this vulnerability by providing a specially crafted .exr file with HTJ2K compression and a specific channel width. This allows controlled data to be written beyond the output heap buffer, leading to a heap write overflow. This issue can ultimately result in remote code execution on systems that decode these malicious EXR images.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0567b9aff9718b3323396a4715c0e285ae347e5a708b4dc63c496e9142ffd2ee
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 6 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/1

{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.7"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/metrics/1/cvssV3_1

{"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:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/metrics/0/cvssV4_0
cwe · 3 assertions

{"cweId":"CWE-1284","description":"Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/problemTypes/0/descriptions/0

{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/problemTypes/0/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

6 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"OpenEXR","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/affected/1
{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/metrics/1/cvssV3_1
{"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:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-1284","description":"Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/problemTypes/0/descriptions/0
{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-34545"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/references/0
{"name":"RHBZ#2454139","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2454139"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/references/1
{"name":"https://github.com/AcademySoftwareFoundation/openexr/commit/3827998f5c041d6a94c6af24bbb363daa669e4b3","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/commit/3827998f5c041d6a94c6af24bbb363daa669e4b3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/references/1
{"name":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.7","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/references/2
{"name":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-ghfj-fx47-wg97","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-ghfj-fx47-wg97"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34545.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bbcf070f39e3374a0215e5c42b5640c19ecb561d950b477911a8bcb27d950d0 · sha256:b33e69a06cb7b399… · /containers/adp/1/references/2

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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