Medium 5.0Published Mar 20, 2026

CVE-2026-33165libde265 is an open source implementation of the h.265 video codec.

Updated under an hour ago (2026-10-19 08:00 UTC)

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It affects struktur libde265. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for struktur libde265

Exploited in the last 30 days

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.

CVSS: 5.0 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

struktur libde265 struktur:libde265	before 1.0.17	NVD

References

https://github.com/strukturag/libde265/commit/c7891e412106130b83f8e8ea8b7f907e9449b658patch
https://github.com/strukturag/libde265/releases/tag/v1.0.17release-notes
https://github.com/strukturag/libde265/security/advisories/GHSA-653q-9f73-8hvgexploit, patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.