CVE-2026-45383
Published:July 21, 2026
Updated:August 06, 2026
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.
Affected Packages
https://github.com/strukturag/libde265.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.0.19Fix Suggestion:
Update to version v1.0.19Related Resources (3)
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Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Out-of-bounds Read
EPSS
Base Score:
0.26