CVE-2018-20839

MediumCVSS 4.3/10Last modified Jun 17, 2026

Description

systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published: May 17, 2019
Last modified: Jun 17, 2026
NVD status: Analyzed

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