EUVD-2026-21399
GHSA-396h-m3pm-fpm5
6.4
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
3
Analysis Generated
Apr 10, 2026 - 16:00 vuln.today
EUVD ID Assigned
Apr 10, 2026 - 16:00 euvd
EUVD-2026-21399
CVE Published
Apr 10, 2026 - 15:16 nvd
MEDIUM 6.4
Description
In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.
Analysis
Local root code execution in systemd's udev subsystem before version 260 allows attackers with physical access to craft malicious hardware devices that exploit unsanitized kernel output, achieving privilege escalation from local user context to root. The attack requires physical device insertion but no user interaction; CVSS 6.4 reflects the physical attack vector constraint, though successful exploitation grants complete system compromise. …
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Priority Score
32
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0
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External POC / Exploit Code
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