NVD

CVE-2026-26104 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

Nist CVSS score does not match with CNA score

CNA: Red Hat, Inc.

Base Score: 5.5 MEDIUM

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2026:3476	Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:5831	Red Hat, Inc.
https://access.redhat.com/security/cve/CVE-2026-26104	Red Hat, Inc.	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2433717	Red Hat, Inc.	Issue Tracking Vendor Advisory
https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw	Red Hat, Inc.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-862	Missing Authorization	Red Hat, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

CVE Modified by Red Hat, Inc. 6/17/2026 6:25:43 AM

Action

Type

Old Value

New Value

Added

Affected

[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks2","cpes":["cpe:/o:redhat:enterprise_linux:10.1"],"versions":[{"version":"0:2.10.90-6.el10_1.1","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks2","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"versions":[{"version":"0:2.10.90-5.el10_0.2","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks2","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks2","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"udisks2","cpes":["cpe:/o:redhat:enterprise_linux:9"]}]

Initial Analysis by NIST 2/26/2026 10:27:05 PM

Action	Type	New Value
Added	CPE Configuration	OR cpe:2.3:a:freedesktop:udisks:2.0.0:::::::
Added	CPE Configuration	OR cpe:2.3:o:redhat:enterprise_linux:10.0:::::::
Added	Reference Type	Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-26104 Types: Vendor Advisory
Added	Reference Type	Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2433717 Types: Issue Tracking, Vendor Advisory

New CVE Received from Red Hat, Inc. 2/25/2026 6:16:03 AM

Action	Type	New Value
Added	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.
Added	CVSS V3.1	AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Added	CWE	CWE-862
Added	Reference	https://access.redhat.com/security/cve/CVE-2026-26104
Added	Reference	https://bugzilla.redhat.com/show_bug.cgi?id=2433717

Quick Info

CVE Dictionary Entry:
CVE-2026-26104
NVD Published Date:
02/25/2026
NVD Last Modified:
06/17/2026
Source:
Red Hat, Inc.

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