---
cve: "CVE-2026-49346"
severity: "HIGH"
cvss: 7.1
epss: "23%"
vendor: "strukturag"
kev: false
exploited: false
published: "2026-06-19 20:12:14"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T05:46:01+02:00"
---

# CVE-2026-49346

> 7.1 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- f0e5137ee10af674dcb5ac8ed5d02f5a102225af (Commit)
- 8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8 (Commit)

## Referenzen

- <https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86>
- <https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49346) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_