High severity · published Mar 20, 2026
CVE-2026-33164
NULL Pointer Dereference in libde265
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
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 1.0.17.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libde265 · strukturag
< 1.0.17 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33164
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33164
Release Notes
https://github.com/strukturag/libde265/releases/tag/v1.0.17
Exploit
https://github.com/strukturag/libde265/security/advisories/GHSA-wqrf-6rf5-v78r
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