{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-124307", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-07T12:24:09.447Z", "datePublished": "2026-11-07T14:17:50.302Z", "dateUpdated": "2026-11-07T14:17:50.302Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-07T14:17:50.302Z"}, "datePublic": "2026-08-30T00:00:00.000Z", "title": "Fraunhofer HHI VVdeC before 3.2.1 Heap Use-After-Free via ALF APS Redefinition", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use After Free", "cweId": "CWE-416", "type": "CWE"}]}], "affected": [{"vendor": "fraunhoferhhi", "product": "vvdec", "packageURL": "pkg:github/fraunhoferhhi/vvdec", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThan": "3.2.1", "status": "affected", "versionType": "semver"}, {"version": "3.2.1", "status": "unaffected", "versionType": "semver"}], "repo": "https://github.com/fraunhoferhhi/vvdec"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "LOCAL", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "HIGH", "baseScore": 5.8, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/fraunhoferhhi/vvdec/issues/391", "tags": ["issue-tracking"]}, {"url": "https://github.com/fraunhoferhhi/vvdec/issues/390", "tags": ["issue-tracking"]}, {"url": "https://github.com/fraunhoferhhi/vvdec/commit/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01", "tags": ["patch"]}, {"url": "https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2570", "tags": ["technical-description"]}, {"url": "https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/ParameterSetManager.h#L97", "tags": ["technical-description"]}, {"url": "https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/CABACReader.cpp#L428-L429", "tags": ["technical-description"]}, {"url": "https://github.com/fraunhoferhhi/vvdec", "tags": ["product"]}, {"name": "VulnCheck Advisory: Fraunhofer HHI VVdeC before 3.2.1 Heap Use-After-Free via ALF APS Redefinition", "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"}], "credits": [{"lang": "en", "value": "Alexander A. Shvedov (sigdevel)", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}