Vulnerability Report

CVE-2026-26104

Title: Unauthorized LUKS header backup in udisks

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-26104.

CWE Category CWE-862

Published Date Feb 25, 2026

Modified Date Mar 25, 2026

Exploit Status Not Found

Score 5.5 CVSS v3.1

Exploit Probability (EPSS)

0.01%

Vulnerability Summary

CVE-2026-26104: A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.

Impacted Vendors

freedesktop 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-26104 https://bugzilla.redhat.com/show_bug.cgi?id=2433717

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.5

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns