---
cve: "CVE-2026-40962"
severity: "MEDIUM"
cvss: 4.9
epss: "13%"
vendor: "FFMPEG"
kev: false
exploited: false
published: "2026-04-16 02:16:12"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T05:51:49+02:00"
---

# CVE-2026-40962

> 4.9 MEDIUM

## Beschreibung

FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 638b521c7b09e00514aa13ade43c389b4b40ddfd (Commit)
- 638b521c7b09e00514aa13ade43c389b4b40ddfd (Commit)

## Referenzen

- <https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40962) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_