CVE-2023-2575Public exploitNetwork attack vector

Authenticated CGI memory corruption via oversized NTP string

Published May 8, 2023 · Updated Feb 13, 2025

Stack-based buffer overflow in Advantech EKI-1521, EKI-1522, and EKI-1524 through 1.21 allows remote authenticated users to corrupt memory. The setsys handler in index.cgi processes the ntp_name POST parameter without enforcing the NTP server field's 64-byte limit. A valid web-interface session and network access to the CGI endpoint are required; triggering the flaw corrupts the web-server child process and leaves zombie processes.

CVSS severity8.8
High
EPSS probability15.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Advantech EKI-1521, EKI-1522, and EKI-1524 through 1.21 allows remote authenticated users to corrupt memory. The setsys handler in index.cgi processes the ntp_name POST parameter without enforcing the NTP server field's 64-byte limit. A valid web-interface session and network access to the CGI endpoint are required; triggering the flaw corrupts the web-server child process and leaves zombie processes.

The record

CVE
CVE-2023-2575
Published
May 8, 2023
Updated
Feb 13, 2025
Vendor
Advantech
Product
EKI-1524
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=0 <=1.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Advantech · EKI-1524version=0 <=1.21
Advantech · EKI-1521version=0 <=1.21
Advantech · EKI-1522version=0 <=1.21

Published CVSS scores

8.8CyberDanubeCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

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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