What it checks
Count of unapplied security updates (yum/apt).
Why it matters
Unpatched known vulnerabilities are exposed to remote exploits.
How to fix
Apply security updates in a maintenance window (reboot if needed).
InfraGuard runs all 36 checks across your servers at once and grades each host A–F.
Track these versions on your own servers
InfraGuard collects installed software versions from every server and flags the ones with known vulnerabilities. Self-hosted — nothing leaves your network.