High 7.1Published Jun 19, 2026

CVE-2026-49346libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow

Updated under an hour ago (Oct 26, 2026, 4:40 PM ET)

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Every CVE for strukturag libde265

Exploited in the last 30 days

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: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-190
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jun 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

strukturag libde265 strukturag:libde265 (from the name)	before 1.1.0	CNA record
struktur libde265 struktur:libde265	before 1.1.0	NVD

References

References

https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86	x-refsource-confirm, exploit, vendor-advisory
https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.