Tag

#hardening

2 articles tagged hardening.

Open server drawer revealing translucent pages illuminated by overhead light

CVE-2024-21545: The Proxmox VE File-Read Bug That Leads to Full Root Takeover

A deep dive into CVE-2024-21545, the authenticated arbitrary file read in Proxmox VE that can be chained into a full root takeover — and how to fix it.

May 13, 2026 4 min read

Fortified server with firewall barriers deflecting attacks and secure SSH entry point

Networking, VLANs, And Security Hardening

Hardening Proxmox VE: Firewall, fail2ban, and SSH Security

Essential security hardening steps for Proxmox VE — firewall, fail2ban, SSH keys, and 2FA setup.

Feb 26, 2026 14 min read