How severe is CVE-2025-34286?

CVE-2025-34286 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-34286 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34286?

CVE-2025-34286 affects Nagios Nagios Xi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34286?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-34286 have an EU (EUVD) identifier?

Yes. CVE-2025-34286 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37209.

When was CVE-2025-34286 published?

CVE-2025-34286 was published on 2025-10-30 and last updated on 2026-06-17.

CVE-2025-34286

CVE-2025-34286 is a high-severity vulnerability in Nagios Nagios Xi with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 9.4
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37209
Weakness: CWE-78
Affected product: Nagios Nagios Xi
Published: 2025-10-30
Last modified: 2026-06-17

Description

Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system.

Frequently asked questions

What is CVE-2025-34286?: Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system.
How severe is CVE-2025-34286?: CVE-2025-34286 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-34286 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34286?: CVE-2025-34286 affects Nagios Nagios Xi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34286?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-34286 have an EU (EUVD) identifier?: Yes. CVE-2025-34286 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37209.
When was CVE-2025-34286 published?: CVE-2025-34286 was published on 2025-10-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

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