CVE-2026-124307
Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability that allows attackers to corrupt memory by redefining an ALF
CVSS
5.8
Medium
EPSS
—
KEV
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Exploit Today
0
0-100
Published: Nov 7, 2026 · Last modified: Nov 7, 2026 · CWE-416
Not enough EPSS history yet.
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.
- github.comhttps://github.com/fraunhoferhhi/vvdec
- github.comhttps://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/ParameterSetManager.h#L97
- github.comhttps://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2570
- github.comhttps://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/CABACReader.cpp#L428-L429
- github.comhttps://github.com/fraunhoferhhi/vvdec/commit/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01
- github.comhttps://github.com/fraunhoferhhi/vvdec/issues/390
- github.comhttps://github.com/fraunhoferhhi/vvdec/issues/391
- www.vulncheck.comhttps://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-before-3.2.1-heap-use-after-free-via-alf-aps-redefinition
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-1243085.8 MED—
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