CVE-2026-33165

MediumCVSS 5.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.0/10CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Mar 20, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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