{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"fraunhoferhhi/vvdec","product":"vvdec","source":"CNA: VulnCheck","vendor":"fraunhoferhhi","versions":[{"lessThan":"3.2.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.2.1","versionType":"semver"}]}],"cveId":"CVE-2026-124309","cwes":["CWE-125"],"description":"Fraunhofer HHI VVdeC before 3.2.1 contains a heap out-of-bounds read vulnerability in SEIReader::xParseSEIScalableNesting that allows attackers to read past heap allocations by casting the SEI wrapper object instead of its payload. Attackers can supply a crafted VVC bitstream with a scalable nesting SEI containing a nested buffering period SEI to crash the decoder or copy adjacent heap memory.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","version":"3.1"}],"modifiedAt":1794061071711,"publishedAt":1794061071711,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/fraunhoferhhi/vvdec/issues/397"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/fraunhoferhhi/vvdec/commit/1d657c7a822987d2ff935e9c227c5faf5318ca06"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/SEIread.cpp#L586-L592"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L644"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/fraunhoferhhi/vvdec"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-before-3.2.1-heap-out-of-bounds-read-via-seireader-xparseseiscalablenesting"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/fraunhoferhhi/vvdec/commit/1d657c7a822987d2ff935e9c227c5faf5318ca06"}],"revision":"4c46617c0120468cb2aa302c399f81154f34b449259b1fb7684d4b5a8216b275","sources":[{"modifiedAt":1794061071711,"name":"CNA: VulnCheck","retrievedAt":1794064136943,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124309"}],"ssvc":null,"status":"published","title":"Fraunhofer HHI VVdeC before 3.2.1 Heap Out-of-Bounds Read via SEIReader::xParseSEIScalableNesting","updatedAt":1794064136943}