Is CVE-2026-26103 actively exploited?

No active exploitation of CVE-2026-26103 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-26103 be exploited remotely?

No. CVE-2026-26103 requires local access to exploit.

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

CVE-2026-26103 has a CVSS score of 7.1 (HIGH) and an EPSS exploitation probability of 0.01%.

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HIGH

CVE-2026-26103

CWE-862Published: February 25, 2026· Updated: Mar 2, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-26103 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.1.