Unauthenticated code execution via stack buffer overflow
Published Nov 8, 2022 · Updated May 2, 2025
Stack-based buffer overflow in NEC EXPRESSCLUSTER X 5.0 for Windows and earlier allows remote attackers to overwrite files or execute code. NEC identifies a crafted network packet as the trigger but does not disclose the affected function or the precise copy operation. No authentication is required; successful exploitation can replace existing files and execute code on the Windows host.
Summary
What happened
Stack-based buffer overflow in NEC EXPRESSCLUSTER X 5.0 for Windows and earlier allows remote attackers to overwrite files or execute code. NEC identifies a crafted network packet as the trigger but does not disclose the affected function or the precise copy operation. No authentication is required; successful exploitation can replace existing files and execute code on the Windows host.
The record
- CVE
- CVE-2022-34823
- Published
- Nov 8, 2022
- Updated
- May 2, 2025
- Vendor
- NEC Corporation
- Product
- EXPRESSCLUSTER X
- Classifications
- CWE-120, CAPEC-100, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 8, 2022CVE publishedPublication date reported by the CVE source.
- May 2, 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.
- 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?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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