TI-2026-40108 Aliases CVE-2026-55567

BleachBit: Exploit File Delete to Escalate Privilege

HIGH 69CWE-367Published 2026-09-21 · Updated 2026-09-21

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00135 3rd percentileScored 2026-11-07

Fix Fixed bleachbit (bleachbit): 6.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
bleachbit	bleachbit	before 6.0.1	6.0.1	Patch available	CNA

bleachbit Vendorbleachbit Affected before 6.0.1 Fixed in 6.0.1 Patch available CNA

Remediation

Fix · CNA bleachbit (bleachbit) Fixed in 6.0.1

Timeline

2026-10-02 Threatist record created from CVE-2026-55567

References

Other 4

TI-2025-23817 BleachBit for Windows Has DLL Untrusted Path Vulnerability CVSS 3.1HIGH 7.3
TI-2023-25453 DLL Search Order Hijacking vulnerability in BleachBit for Windows CVSS 3.1HIGH 7.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences