CVE-2026-49346

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_t`, writing ~4 GB into the undersized heap buffer. Version 1.1.0 patches the issue.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8	Patch
https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86	Exploit Vendor Advisory
https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-19 21:17

Updated : 2026-06-26 19:17

NVD link : CVE-2026-49346

Mitre link : CVE-2026-49346

CVE.ORG link : CVE-2026-49346

JSON object : View

Products Affected

struktur

libde265

CWE

CWE-190

Integer Overflow or Wraparound

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