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CVE-2026-33165

nvd nist
Published: Mar 20, 2026Modified: Mar 23, 2026

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5.0
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Exploitability: 1.3 / Impact: 3.6
Source: NVD

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 (1)

Products: Struktur: Libde265
Struktur
1 product
Libde265
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Libde265
Before 1.0.17

Related CWEs

CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (3)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
ExploitVendor AdvisoryPatch

Timeline

No history available yet.