Is CVE-2026-26103 in the CISA KEV catalog?

No. CVE-2026-26103 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-26103?

CVE-2026-26103 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2026-26103?

CVE-2026-26103 has an EPSS score of 0.07% (0th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-26103?

Upgrade udisks2 on debian unstable to 2.11.1-1 or later. Fixes are available for 25 affected products.

CVE & CISA-KEV Catalog

CVE-2026-26103

HIGH

7.1

CVSS v3

NVD

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.

CWE-862Missing Authorization

How to fix

Remediation Available

udisks2Debian

Fixed in:2.11.1-1CVE-2026-26103

libudisks2Rocky

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

libudisks2Red Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

libudisks2-debuginfoRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

libudisks2-debuginfoRed Hat / RHEL

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

libudisks2-develRed Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

libudisks2-develRocky

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2Red Hat / RHEL

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2Rocky

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-debuginfoRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-debuginfoRed Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-debugsourceRed Hat / RHEL

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-debugsourceRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-iscsiRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-iscsiRed Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-iscsi-debuginfoRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-iscsi-debuginfoRed Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-lsmRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-lsmRed Hat / RHEL

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-lsm-debuginfoRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-lsm-debuginfoRed Hat / RHEL

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-lvm2Rocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-lvm2Red Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

udisks2-lvm2-debuginfoRed Hat / RHEL

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

udisks2-lvm2-debuginfoRocky

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Fixed in:0:2.10.90-6.el10_1.1RHSA-2026:3476

Fixed in:0:2.10.90-5.el10_0.2RHSA-2026:5831

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.07%probability of exploitation in 30 days

0thpercentile

Low risk: more likely to be exploited than 0% of all known CVEs.

References

Vendor Advisory2

Other references4

Related Vulnerabilities

Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-39226	Critical	9.8	100%	KEV	Fix
CVE-2022-0543	Critical	10.0	100%	KEV	Fix
CVE-2021-21978	Critical	9.8	99%	-	Fix
CVE-2023-52163	High	8.8	96%	KEV	-
CVE-2022-1329	High	8.8	93%	-	-
CVE-2023-6875	Critical	9.8	90%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.