ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-34286

Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command.

Published Oct 30, 2025 · catalog updated May 14, 2026 · Nagios XI

Last checked Oct 27, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-34286. EPSS is 2.40%. Act only if a listed version of Nagios XI is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.40%
Remediation
Version ranges on file
Affected products
vendor Nagios XI 0 <2026R1

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Nagios XI 0 <2026R10 <2026R1

How to fix CVE-2025-34286

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-34286. EPSS is 2.40%. Act only if a listed version of Nagios XI is installed.

Which versions are affected?

Compare what you have installed with Nagios XI 0 <2026R1 0 <2026R1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 2.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2025 · EUVD

    Detected

    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

  2. May 14, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-34286

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34286

    30-day exploitation probability 2.40%

    first.org
  • EUVDVulnerability recordEUVD-2025-37209

    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 metacharac

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 27, 2026
  • CVE.orgOct 24, 2026
  • EUVDOct 23, 2026