CVEvulnerability

CVE-2026-33165

5.0 MEDIUM Published 2026-03-20 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-03-20
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.0 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Weaknesses
CWE-787

Description

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.

Affected configurations

• struktur libde265 (< 1.0.17)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References