CVE-2026-49337

MEDIUM EPSS 9.3%
Published Jun 19, 20261w ago · Modified Jun 23, 20261w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Jun 19, 2026 1w ago
Last Modified Jun 23, 2026 1w ago

Description

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object that has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
9.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-770

References 2

  • github.com https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9
  • github.com https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.