CVE-2026-26103

Name: CVE-2026-26103
Creator: NVD / NIST
Published: 2026-02-25T11:16:02.983+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.07%

Last modified Jun 17, 2026

CVE-2026-26103 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. EPSS estimates a 0.07% chance of exploitation in the next 30 days.

Description

A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. This can permanently invalidate encryption keys and render encrypted volumes inaccessible. Successful exploitation results in a denial-of-service condition through irreversible data loss.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.07%

0.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux	10.0
Freedesktop	Udisks	2.0.0

References

https://access.redhat.com/errata/RHSA-2026:3476
https://access.redhat.com/errata/RHSA-2026:5831
https://access.redhat.com/security/cve/CVE-2026-26103Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2433719Issue Tracking, Vendor Advisory
https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-26103?

How severe is CVE-2026-26103?

CVE-2026-26103 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.07% probability of exploitation in the next 30 days.

How do I fix CVE-2026-26103?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-26103?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST