{"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-2026-124307","cwes":["CWE-416"],"description":"Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability that allows attackers to corrupt memory by redefining an ALF adaptation parameter set id still referenced by slices. Attackers can supply a crafted VVC bitstream that, with multithreaded decoding, makes worker threads dereference freed APS objects in CABACReader::readAlf() and AdaptiveLoopFilter::reconstructCoeff(), causing crashes or heap corruption.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.8,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.8,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"}],"modifiedAt":1794061070302,"publishedAt":1794061070302,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/fraunhoferhhi/vvdec/issues/391"},{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/fraunhoferhhi/vvdec/issues/390"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/fraunhoferhhi/vvdec/commit/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2570"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/ParameterSetManager.h#L97"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/CABACReader.cpp#L428-L429"},{"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-use-after-free-via-alf-aps-redefinition"}],"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/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01"}],"revision":"552c1b21c3e2e6129d798e971042921060d98477c63f7188289710baac94f72d","sources":[{"modifiedAt":1794061070302,"name":"CNA: VulnCheck","retrievedAt":1794064134718,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124307"}],"ssvc":null,"status":"published","title":"Fraunhofer HHI VVdeC before 3.2.1 Heap Use-After-Free via ALF APS Redefinition","updatedAt":1794064134718}