Vulnerability · Published Mar 20, 2026 · Assigned by GitHub_M
CVE-2026-33164NULL Pointer Dereference in libde265
High 8.7
In plain English
A high-severity heap buffer overflow in libde265 from strukturag. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.4%top 69.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | libde265 | 1.0.18-r0 | ALPINE-CVE-2026-33164 |
| Debian:12 | libde265 | 1.0.11-1+deb12u3 | DEBIAN-CVE-2026-33164 |
| Debian:13 | libde265 | 1.0.15-1+deb13u2 | DEBIAN-CVE-2026-33164 |
| Debian:14 | libde265 | 1.0.18-1 | DEBIAN-CVE-2026-33164 |
| Ubuntu:24.04:LTS | libde265 | 1.0.15-1ubuntu0.1 | USN-8573-1 |
| Ubuntu:24.04:LTS | libde265 | 1.0.15-1ubuntu0.1 | UBUNTU-CVE-2026-33164 |
| Ubuntu:25.10 | libde265 | no fix listed | UBUNTU-CVE-2026-33164 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libde265 | < 1.0.17 |
Weakness: CWE-122 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://github.com/strukturag/libde265/security/advisories/GHSA-wqrf-6rf5-v78r x_refsource_CONFIRM
- https://github.com/strukturag/libde265/releases/tag/v1.0.17 x_refsource_MISC