CVE-2023-28354Public exploitNetwork attack vector

Unauthenticated SYSTEM command execution via NRPE argument injection

Published Jan 9, 2025 · Updated Jan 10, 2025

Command injection in Opsview Monitor Agent 6.8 allows remote attackers to execute arbitrary commands as NT AUTHORITY\SYSTEM through NRPE. Default Windows NRPE handlers accept metacharacters and interpolate remote arguments into command pipelines that feed PowerShell without neutralization. The exposed NRPE service requires no authentication, and successful injection runs with the agent service's default Local System privileges.

CVSS severity9.8
Critical
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Opsview Monitor Agent 6.8 allows remote attackers to execute arbitrary commands as NT AUTHORITY\SYSTEM through NRPE. Default Windows NRPE handlers accept metacharacters and interpolate remote arguments into command pipelines that feed PowerShell without neutralization. The exposed NRPE service requires no authentication, and successful injection runs with the agent service's default Local System privileges.

The record

CVE
CVE-2023-28354
Published
Jan 9, 2025
Updated
Jan 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.001Command and Scripting Interpreter: PowerShell

Public exploit references

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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