What is CVE-2026-33164?

CVE-2026-33164 is a high-severity vulnerability in Struktur Libde265, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-03-20.

How severe is CVE-2026-33164?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Struktur Libde265

CVE-2026-33164

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a malformed H.265 PPS NAL unit causes a segmentation fault in pic_parameter_set::set_derived_values(). This issue has been patched in version 1.0…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (27.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Struktur Libde265
Strukturag Libde265 — versions < 1.0.17

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-33164?: CVE-2026-33164 is a high-severity vulnerability in Struktur Libde265, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-03-20.
How severe is CVE-2026-33164?: High severity. CVSS v3 base score is 7.5 out of 10.