CVE-2024-12373Network attack vector

Device crash via unchecked CGI arguments

Published Dec 18, 2024 · Updated Dec 18, 2024

Classic buffer overflow in Rockwell Automation PowerMonitor 1000 before 4.020 allows remote attackers to crash the device via crafted HTTP requests. The web server converts CGI arguments into two-byte values and writes more than 0x50 values past buffer_0x100_2 because the first copy has no bounds check. Parsing occurs before authorization, so no credentials or user interaction are required to interrupt meter availability.

CVSS severity9.3
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classic buffer overflow in Rockwell Automation PowerMonitor 1000 before 4.020 allows remote attackers to crash the device via crafted HTTP requests. The web server converts CGI arguments into two-byte values and writes more than 0x50 values past buffer_0x100_2 because the first copy has no bounds check. Parsing occurs before authorization, so no credentials or user interaction are required to interrupt meter availability.

The record

CVE
CVE-2024-12373
Published
Dec 18, 2024
Updated
Dec 18, 2024
Vendor
Rockwell Automation
Product
PowerMonitor 1000 1408-BC3A-ENT
Classifications
CWE-120, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=<4.020

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · PowerMonitor 1000 1408-BC3A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM3A-485version=<4.020
Rockwell Automation · PowerMonitor 1000 1408-BC3A-485version=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM1A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM2A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-TS3A-485version=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM3A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-TS3A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM2A-485version=<4.020
Rockwell Automation · PowerMonitor 1000 1408-TR1A-485version=<4.020
Rockwell Automation · PowerMonitor 1000 1408-TR2A-485version=<v4.020
Rockwell Automation · PowerMonitor 1000 1408-TR2A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-TR1A-ENTversion=<4.020
Rockwell Automation · PowerMonitor 1000 1408-EM1A-485version=<4.020

Published CVSS scores

9.3Rockwell AutomationCVSS: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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T0814Denial of Service

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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