CVE-2025-11546Network attack vector

Unauthenticated command execution via crafted network packets

Published Nov 7, 2025 · Updated Nov 7, 2025

OS command injection in NEC EXPRESSCLUSTER X 4.0 through 4.3 and 5.0 through 5.2 for Linux allows remote attackers to execute commands. NEC identifies the exposed locus only as the data-transfer service on default TCP port 29002 and has not disclosed how packet fields reach an OS command. No authentication or user interaction is required; a reachable service can therefore yield arbitrary OS-command execution on the Linux host, including SingleServerSafe installations.

CVSS severity9.3
Critical
EPSS probability0.44%
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 NEC EXPRESSCLUSTER X 4.0 through 4.3 and 5.0 through 5.2 for Linux allows remote attackers to execute commands. NEC identifies the exposed locus only as the data-transfer service on default TCP port 29002 and has not disclosed how packet fields reach an OS command. No authentication or user interaction is required; a reachable service can therefore yield arbitrary OS-command execution on the Linux host, including SingleServerSafe installations.

The record

CVE
CVE-2025-11546
Published
Nov 7, 2025
Updated
Nov 7, 2025
Vendor
NEC Corporation
Product
EXPRESSCLUSTER X SingleServerSafe
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0, 4.1, 4.2, 5.0, 5.1 and 5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NEC Corporation · EXPRESSCLUSTER X SingleServerSafeversion=4.0, 4.1, 4.2, 5.0, 5.1 and 5.2
NEC Corporation · EXPRESSCLUSTER Xversion=4.0, 4.1, 4.2, 5.0, 5.1 and 5.2

Published CVSS scores

9.3NEC CorporationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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