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CVE-2025-5689

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Date: June 16, 2025

A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.

Severity Score

Severity Score

Weakness Type (CWE)

Improper Privilege Management

CWE-269

Incorrect Privilege Assignment

CWE-266

Top Fix

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Upgrade Version

Upgrade to version github.com/ubuntu/authd - v0.5.4;https://github.com/ubuntu/authd.git - v0.5.4

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): LOW
Availability (A): NONE

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