CVE Explorer
CVE-2026-34378
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overflow in generic_unpack(). By setting dataWindow.min.x to a large negative value, OpenEXRCore computes an enormous image width, which is later used in a signed integer multiplication that overflows, causing
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.9"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:eb28e03e4c25315310e7f265ed722378cf074fcd3925daf35d01a62dd7393de1 · sha256:07f472addabcca30… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:eb28e03e4c25315310e7f265ed722378cf074fcd3925daf35d01a62dd7393de1 · sha256:07f472addabcca30… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:eb28e03e4c25315310e7f265ed722378cf074fcd3925daf35d01a62dd7393de1 · sha256:07f472addabcca30… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eb28e03e4c25315310e7f265ed722378cf074fcd3925daf35d01a62dd7393de1 · sha256:07f472addabcca30… · /containers/cna/references/1
{"name":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-v76p-4qvv-vh4g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-v76p-4qvv-vh4g"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eb28e03e4c25315310e7f265ed722378cf074fcd3925daf35d01a62dd7393de1 · sha256:07f472addabcca30… · /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.