CVE-2025-34284Network attack vector

Authenticated command execution via WinRM parameter injection

Published Oct 30, 2025 · Updated Oct 30, 2025

OS command injection in the WinRM plugin in Nagios XI before 2024R2 allows remote authenticated users to execute arbitrary commands. The WinRM wizard backend handlers incorporate user-supplied parameters containing shell metacharacters into backend command invocations without sufficient validation. Administrator access is required, and commands run as the Nagios XI web application user with access to host data, configuration, and monitoring operations.

CVSS severity9.4
Critical
EPSS probability4.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in the WinRM plugin in Nagios XI before 2024R2 allows remote authenticated users to execute arbitrary commands. The WinRM wizard backend handlers incorporate user-supplied parameters containing shell metacharacters into backend command invocations without sufficient validation. Administrator access is required, and commands run as the Nagios XI web application user with access to host data, configuration, and monitoring operations.

The record

CVE
CVE-2025-34284
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.4VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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