7.1

CVE-2026-26103: freedesktop udisks Missing Authorization

CVSS: 7.1v3.1HighModified
AliasesDEBIAN-CVE-2026-26103
Published 25-02-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-26103 is a high (CVSS 7.1) Missing Authorization vulnerability in freedesktop udisks. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.11%
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. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.11%

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
0.11%

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

7 links