CVE-2025-28132: A session management flaw in Nagios Network Analyzer 2024R1.0.3 allows an attacker to reuse session tokens eve

Routine

MEDIUM 4.6DOWNGRADE

CVE-2025-28132 is a medium-severity flaw (CVSS 4.6) affecting nagios network analyzer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A session management flaw in Nagios Network Analyzer 2024R1.0.3 allows an attacker to reuse session tokens even after a user logs out, leading to unauthorized access and account takeover. This occurs due to insufficient session expiration, where session tokens remain valid beyond logout, allowing an attacker to impersonate users and perform actions on their behalf.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-613
Published	2025-04-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nagios

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-01 17:15 UTCPublished CVE record published
2026-06-17 09:04 UTCUpdated Record last modified

nagios nagios network analyzer DOWNGRADE

Affected: 2024 r1.0.3*

Fixed in: no fixed release known

Safe to downgrade to: a release before 2024

1. Check installed version

apt-cache policy nagios-network-analyzer || rpm -q nagios-network-analyzer || nagios-network-analyzer --version

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

apt-cache madison nagios-network-analyzer sudo apt install nagios-network-analyzer=<VERSION_BEFORE_2024> sudo apt-mark hold nagios-network-analyzer

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

dnf --showduplicates list nagios-network-analyzer sudo dnf downgrade nagios-network-analyzer-<VERSION_BEFORE_2024> sudo dnf versionlock add nagios-network-analyzer

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-2025-28132?

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

Is CVE-2025-28132 being exploited?

CVE-2025-28132 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-2025-28132 affect?

CVE-2025-28132 affects nagios network analyzer. Severity is medium (CVSS 4.6). A session management flaw in Nagios Network Analyzer 2024R1.0.3 allows an attacker to reuse session tokens even after a user logs out, leading to unauthorized access and account takeover. This occurs due to insufficient session expiration,

How urgent is CVE-2025-28132?

Priority 24/100. No elevated risk signals yet.

Software pages

Nagios vulnerabilities

References

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