CVE-2026-49346 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-49346HIGH

strukturag libde265 — libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  N  L  H    7.1   .0023   13.8     —

AFFECTED
  Product   Versions   Fixed
  libde265  < 1.1.0 –  —

TIMELINE
  May 29  Reserved by GitHub_M
  Jun 19  EXPLOIT PUBLISHED — CVE-2026-49346 (strukturag libde265). Public exploit reference added.
  Jun 19  Published (CNA: GitHub_M)

CWE-190 · CNA: GitHub_M · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 29, 2026	Reserved	Reserved by GitHub_M
June 19, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-49346 (strukturag libde265). Public exploit reference added.
June 19, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
strukturag	libde265	—	< 1.1.0	—

Weaknesses

CWE-190

References (2)

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

Authoritative record: CVE-2026-49346 at cve.org

Vendors: strukturag

Weaknesses: CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49346 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.