CVE-2025-60424: A lack of rate limiting in the OTP verification component of Nagios Fusion v2024R1.2 and v2024R2 allows attack

This month

HIGH 7.6DOWNGRADE

CVE-2025-60424 is a high-severity flaw (CVSS 7.6) affecting fusion. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A lack of rate limiting in the OTP verification component of Nagios Fusion v2024R1.2 and v2024R2 allows attackers to bypass authentication via a bruteforce attack.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.6 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-287, CWE-307
Published	2025-10-27
Last modified	2026-10-27

Publisher (CNA): MITRE · Vendor: nagios

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-27 16:15 UTCPublished CVE record published
2026-10-27 12:10 UTCUpdated Record last modified

nagios fusion DOWNGRADE

Affected: 2024 r1.2 · 2024 r2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2024

1. Check installed version

apt-cache policy fusion || rpm -q fusion || fusion --version

2. No fixed release: DOWNGRADE to a release before 2024 (Debian / Ubuntu)

apt-cache madison fusion sudo apt install fusion=<VERSION_BEFORE_2024> sudo apt-mark hold fusion

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fusion sudo dnf downgrade fusion-<VERSION_BEFORE_2024> sudo dnf versionlock add fusion

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-60424?

fusion: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-60424 being exploited?

CVE-2025-60424 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-60424 affect?

CVE-2025-60424 affects fusion. Severity is high (CVSS 7.6). A lack of rate limiting in the OTP verification component of Nagios Fusion v2024R1.2 and v2024R2 allows attackers to bypass authentication via a bruteforce attack.

How urgent is CVE-2025-60424?

Priority 40/100. High severity

Software pages

Nagios vulnerabilities

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References

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