What is CVE-2022-29270?

CVE-2022-29270 is a medium-severity vulnerability in Nagios Xi, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2022-06-29.

How severe is CVE-2022-29270?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2022-29270 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Nagios Xi

CVE-2022-29270

In Nagios XI through 5.8.5, it is possible for a user without password verification to change his e-mail address.

Vulnerability class: Broken Authentication

Published 2022-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.034 (88.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.034 · change: +0.010

Affected products

Nagios Xi

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

www.nagios.com/downloads/nagios-xi/change-log/ (Release Notes, Vendor Advisory)
assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT (Release Notes, Vendor Advisory)
github.com/4LPH4-NL/CVEs (Third Party Advisory)
github.com/sT0wn-nl/CVEs/blob/master/README.md (Third Party Advisory)

Frequently asked questions

What is CVE-2022-29270?: CVE-2022-29270 is a medium-severity vulnerability in Nagios Xi, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2022-06-29.
How severe is CVE-2022-29270?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2022-29270 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.