Hazard

Is CVE-2021-25297 being exploited?

Weaponised and widely attempted

Reliable public exploit code exists, or mass exploitation attempts are probable. Patch inside days, not weeks.

Nagios XI OS Command Injection

Nagios · Nagios XI

CVSS 8.8 EPSS 56% no public exploit indexed Fix deadline passed 1 February 2022

What it is

Nagios XI contains a vulnerability which can lead to OS command injection on the Nagios XI server.

Why we say that

  • EPSS puts exploitation in the next 30 days at 56%
  • CISA's federal remediation deadline (2022-02-01) has passed
  • Listed in the CISA Known Exploited Vulnerabilities catalogue

Every line above comes from a named public source. Where the evidence is thin, we say so rather than inventing confidence — see methodology.

What to do

Apply updates per vendor instructions.

What it costs when this goes wrong

This is where UK enforcement meets the vulnerability record. Where an unfixed vulnerability leads to a breach, the ICO treats it as a security failure under UK GDPR. Recent cases:

All UK cases caused by unpatched software →