VDB
CVE-2026-49346
CVE-2026-49346
PUBLISHED
CVSS 7.1 HIGH
Reported by GitHub_M · Published June 19, 2026
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.
Risk Scores
CVSS 3.1
7.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libde265 | < 1.1.0 |
| strukturag | libde265 | < 1.1.0, < 1.1.0 |
| alpine | libde265 | 0, 0, 0 |
Timeline
- Jun 19, 2026 CVE Published
- Jun 20, 2026 Coalition ESS Score
- Jun 22, 2026 CVE Updated
- Jun 23, 2026 EPSS Score
- Jun 23, 2026 Security Advisory
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 4, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score