CVE Tools
Sign in

CVE-2026-26104

Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api

Published: Feb 25, 2026Updated: Mar 2, 2026 Sources: CVE List NVDCWE-862
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.1%
Top 99.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-862

Affected Products

enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
udisksfreedesktopOSS Libraries
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 6Red Hat
On-premOS
Operating Systems / linux-distro
redhatcommercialUSOperating Systemsaka red hat
freedesktoposs-projectOSS Librariesaka freedesktop.org
red hatcommercialUSOperating Systemsaka red hat
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:3476
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-26104
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2433717
bugzilla.redhat.com
and 2 more references View all →

Timeline

Published
Feb 25, 2026
Last Updated
Mar 2, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-26104 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows