What’s Vulnerable › Vulnerabilities

CVE-2019-3825

• Severity: medium (CVSS 6.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-02-06 · updated 2026-06-17
• Weakness: CWE-287

Description

A vulnerability was discovered in gdm before 3.31.4. When timed login is enabled in configuration, an attacker could bypass the lock screen by selecting the timed login user and waiting for the timer to expire, at which time they would gain access to the logged-in user's session.

Affected products

• Canonical Ubuntu Linux: 18.04, 18.10
• Gnome Display Manager: before 3.31.4 — fixed in 3.31.4
• Red Hat Enterprise Linux: 7.0

How to fix

Upgrade to a fixed version: Gnome Display Manager 3.31.4. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3825
• https://usn.ubuntu.com/3892-1/
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3825
• https://usn.ubuntu.com/3892-1/

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