CVE-2024-21866Network attack vector

Sensitive data disclosure via malformed request errors

Published Feb 1, 2024 · Updated Jun 17, 2025

Information disclosure in Rapid Software LLC Rapid SCADA 5.8.4 and earlier allows remote attackers to read sensitive data via a malformed request. The product returns an error message containing sensitive data after processing the request, but the affected endpoint and exposed fields are undisclosed. No authentication or user interaction is required; the documented consequence is limited to data contained in the error response.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Rapid Software LLC Rapid SCADA 5.8.4 and earlier allows remote attackers to read sensitive data via a malformed request. The product returns an error message containing sensitive data after processing the request, but the affected endpoint and exposed fields are undisclosed. No authentication or user interaction is required; the documented consequence is limited to data contained in the error response.

The record

CVE
CVE-2024-21866
Published
Feb 1, 2024
Updated
Jun 17, 2025
Vendor
Rapid Software LLC
Product
Rapid SCADA
Classifications
CWE-209, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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 <=5.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rapid Software LLC · Rapid SCADAversion=0 <=5.8.4

Published CVSS scores

5.3ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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.

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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-209Generation of Error Message Containing Sensitive Information
T1190Exploit Public-Facing Application

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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