---
cve: "CVE-2026-12706"
severity: "MEDIUM"
cvss: 6.5
epss: "25%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-06-19 12:16:27"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T10:33:00+02:00"
---

# CVE-2026-12706

> 6.5 MEDIUM

## Beschreibung

A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-12706>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2490710>
- <https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/>
- <https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-12706) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_