VulnerabilityAnalyzed

CVE-2026-33164

libde265 is an open source implementation of the h.265 video codec.

HIGH 8.7EPSS 0.35%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 4.0: 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.35% probability · 28th percentile
CISA KEV: Not listed
Weakness: CWE-122, CWE-476
Affected: struktur/libde265
Source: security-advisories@github.com

References

https://github.com/strukturag/libde265/releases/tag/v1.0.17Release Notes
https://github.com/strukturag/libde265/security/advisories/GHSA-wqrf-6rf5-v78rExploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.