CVE-2022-34824Network attack vector

Remote file overwrite via weak permissions

Published Nov 8, 2022 · Updated May 1, 2025

Incorrect default permissions in NEC Corporation EXPRESSCLUSTER X 5.0 and earlier allow remote unauthenticated attackers to overwrite files. The installation directory grants excessive write access, allowing crafted network requests to replace existing files and potentially execute arbitrary code. No authentication is required, so internet- or intranet-reachable management services are exposed to full confidentiality, integrity, and availability impact.

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

Incorrect default permissions in NEC Corporation EXPRESSCLUSTER X 5.0 and earlier allow remote unauthenticated attackers to overwrite files. The installation directory grants excessive write access, allowing crafted network requests to replace existing files and potentially execute arbitrary code. No authentication is required, so internet- or intranet-reachable management services are exposed to full confidentiality, integrity, and availability impact.

The record

CVE
CVE-2022-34824
Published
Nov 8, 2022
Updated
May 1, 2025
Vendor
NEC Corporation
Product
EXPRESSCLUSTER X
Classifications
CWE-276, T1222
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 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=CLUSTERPRO X 5.0 for Windows and earlier, EXPRESSCLUSTER X 5.0 for Windows and earlier, CLUSTERPRO X 5.0 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 5.0 SingleServerSafe for Windows and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NEC Corporation · EXPRESSCLUSTER Xversion=CLUSTERPRO X 5.0 for Windows and earlier, EXPRESSCLUSTER X 5.0 for Windows and earlier, CLUSTERPRO X 5.0 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 5.0 SingleServerSafe for Windows and earlier

Published CVSS scores

9.8NVDCVSS: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.

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-276Incorrect Default Permissions
T1222File and Directory Permissions Modification

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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