---
cve: "CVE-2026-55567"
severity: "HIGH"
cvss: 7.8
epss: "27.8%"
vendor: "bleachbit"
kev: false
exploited: false
published: "2026-09-21 15:17:29"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T11:51:36+02:00"
---

# CVE-2026-55567

> 7.8 HIGH · 🧪 PoC

## Beschreibung

BleachBit cleans files to free disk space and to maintain privacy. Prior to 6.0.1, privileged Windows cleaning does not lock and validate a target's parent directory before deletion. A local unprivileged user can replace that directory with a Windows junction and use a native symlink to redirect the elevated deletion to an attacker-selected file. The arbitrary privileged file deletion can be combined with Windows Installer behavior to obtain local SYSTEM privileges. This issue is fixed in version 6.0.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- ee128238e92c7192f0c4d6406b1bd0cd9155e7e0 (Commit)
- a779b5fc985d7ce72a4880ebdc93a9d68f7f877f (Commit)

## Referenzen

- <https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94>
- <https://github.com/bleachbit/bleachbit/pull/1774>
- <https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0>
- <https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55567) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_