{"schemaVersion":3,"id":"CVE-2026-54920","aliases":["SUSE-SU-2026:3168-1","UBUNTU-CVE-2026-54920","DEBIAN-CVE-2026-54920"],"status":"published","duplicateOf":null,"title":null,"description":"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 3.4.12, a reachable assertion failure in the HTJ2K decode path allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.","dates":{"published":"2026-08-25T00:10:39.077Z","modified":"2026-08-25T15:17:34.384Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":0,"severity":"unknown","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":0,"severity":"unknown","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":0,"severity":"unknown","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","exploitability":10,"impact":0,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"},{"id":"CWE-824","name":"Access of Uninitialized Pointer","description":"The product accesses or uses a pointer that has not been initialized.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/824.html"}],"affected":[{"vendor":"academysoftwarefoundation","product":"openexr","name":"openexr","label":"openexr","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.2.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.3.0, ≤ 3.3.12","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.4.0, ≤ 3.4.13","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.2.10 | ≥ 3.3.0, ≤ 3.3.12 | ≥ 3.4.0, ≤ 3.4.13","eol":null,"hubHref":"/vendor/academysoftwarefoundation/openexr"},{"vendor":"debian","product":"openexr","name":"openexr","label":"openexr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/openexr","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 3.4.14-0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 3.4.14-0.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"openexr","name":"openexr","label":"openexr","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/openexr","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"suse","product":"openexr&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5","name":"openexr","label":"openexr&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/openexr&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5","purlType":"rpm","versions":[{"text":"< 2.1.0-6.48.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.1.0-6.48.1","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-fp75-87pr-8329","label":"github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-fp75-87pr-8329","hostname":"github.com","tags":["X Refsource CONFIRM"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263168-1/","label":"www.suse.com/support/update/announcement/2026/suse-su-20263168-1/","hostname":"www.suse.com","tags":["Advisory"]},{"url":"https://bugzilla.suse.com/1269703","label":"bugzilla.suse.com/1269703","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54920","label":"www.suse.com/security/cve/CVE-2026-54920","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://ubuntu.com/security/CVE-2026-54920","label":"ubuntu.com/security/CVE-2026-54920","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-54920","label":"www.cve.org/CVERecord?id=CVE-2026-54920","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://github.com/academysoftwarefoundation/openexr/security/advisories/ghsa-fp75-87pr-8329","label":"github.com/academysoftwarefoundation/openexr/security/advisories/ghsa-fp75-87pr-8329","hostname":"github.com","tags":["REPORT"]},{"url":"https://github.com/cveproject/cvelistv5/tree/main/cves/2026/54xxx/cve-2026-54920.json","label":"github.com/cveproject/cvelistv5/tree/main/cves/2026/54xxx/cve-2026-54920.json","hostname":"github.com","tags":["REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/cve-2026-54920","label":"nvd.nist.gov/vuln/detail/cve-2026-54920","hostname":"nvd.nist.gov","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-54920","label":"security-tracker.debian.org/tracker/CVE-2026-54920","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11218-1","OPENSUSE-SU-2026:21336-1","SUSE-SU-2026:22653-1","SUSE-SU-2026:3169-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11218-1","OPENSUSE-SU-2026:21336-1","SUSE-SU-2026:22653-1","SUSE-SU-2026:3169-1"]},"timeline":[{"kind":"published","date":"2026-08-25T00:10:39.077Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-25T15:17:34.384Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T12:47:56.677Z","stale":false,"partial":false}}