---
cve: "CVE-2026-79783"
severity: "LOW"
cvss: 2.0
epss: "0.1%"
vendor: "rclone"
kev: false
exploited: false
published: "2026-08-25 16:17:30"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T20:13:57+02:00"
---

# CVE-2026-79783

> 2.0 LOW · 🧪 PoC

## Beschreibung

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid binary that escalates privileges to root if rclone runs as root, or to the service account user otherwise.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 5bc93a2a7ab0ebd0a11352bc4968eabeffb18027 (Commit)

## Referenzen

- <https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw>
- <https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-79783) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_