CVE-2026-45383: medium-severity vulnerability in strukturag libde265
libde265 has a heap buffer overflow (OOB read) in decode_slice_unit_WPP() via out-of-bounds CtbAddrRStoTS access — libde265 <= v1.0.18
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.4%
libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.0.19 have a heap buffer overflow (out-of-bounds READ) exists in `decoder_context::decode_slice_unit_WPP()` in `libde265/decctx.cc`. When decoding a WPP (Wavefront Parallel Processing) HEVC slice, `ctbAddrRS` is computed as `ctbRow * ctbsWidth` inside the entry-point loop. If the PPS/SPS headers are crafted so that this value exceeds `pps.CtbAddrRStoTS.size()`, the subsequent array access `pps.CtbAddrRStoTS[ctbAddrRS]` reads past the end of the allocated vector, triggering a heap-buffer-overflow confirmed by AddressSanitizer. Version 1.0.19 patches the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
strukturag · libde265Related CVEs — strukturag libde265
In the same product, most dangerous first.
CVE-2026-45382MEDIUMlibde265 has a heap-buffer-overflow READ in decode_slice_unit_tiles via unvalidated PPS tile geometryEPSS 0.4%CVE-2026-54241HIGHlibde265: SAO sequential filter heap buffer overflow via signed integer overflowEPSS 0.4%CVE-2026-54240HIGHlibde265: Pixel accessor signed integer overflow causes heap OOB read/writeEPSS 0.4%CVE-2026-49346HIGHlibde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflowEPSS 0.4%CVE-2026-33164HIGHNULL Pointer Dereference in libde265EPSS 0.4%CVE-2026-49295HIGHlibde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPSEPSS 0.3%