5.5

CVE-2026-26104: freedesktop udisks Missing Authorization

CVSS: 5.5v3.1MediumModified
AliasesDEBIAN-CVE-2026-26104
Published 25-02-2026Last modified 25-03-2026
Open JSON

Vulnerability summary

CVE-2026-26104 is a medium (CVSS 5.5) Missing Authorization vulnerability in freedesktop udisks. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.9% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.10%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 1
OPENSUSE-SU-2026:10273-1RHSA-2026:3476RHSA-2026:5831

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 25-03-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

+0.03 pp

From 0.07% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.10%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • udisks2< 2.11.1-1
Freedesktop1 product
Redhat1 product

3 vendors · 3 products

References

6 links