Proxmox VE - Default Credentials with TFA Bypass
CVE-2023-54391
Verified
Description
Detected Proxmox VE was accessible using default root@pam credentials combined with a TFA challenge bypass. An attacker could authenticate as root by submitting the default password "root@pam" along with a crafted tfa-challenge parameter, thereby bypassing two-factor authentication enforcement and gaining full administrative access to the hypervisor management interface.
Severity
Critical
Published Date
September 4, 2026
Template Author
dhiyaneshdk, 0x_akoko
CVE-2023-54391.yaml
9.5Severity
CVSS Metrics
References
Remediation Steps
Update to version 8.0.4 or later.