/Vulnerability Library

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.