VULNERABILITY INTELLIGENCE

CVE-2020-27780

CVSS score9.8 CRITICAL
EPSS probability1.96%
CISA KEVNot currently listed
Published2020-12-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't exist PAM try to authenticate with root and in the case of an empty password it successfully authenticate.

Weakness classification

  • secalert@redhat.com: CWE-287

Primary references