CVE-2024-47221Network attack vector

Account impersonation via accepted empty passwords

Published Sep 22, 2024 · Updated Mar 19, 2025

Authentication bypass in Rapid SCADA 5.8.4 and earlier allows remote attackers to assume a configured user's role with an empty password. The CheckUser method in ScadaServerEngine/MainLogic.cs accepted a null or empty password after matching only the supplied username. Network access and knowledge of a configured username are sufficient; successful authentication grants that account's role and associated control permissions.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Rapid SCADA 5.8.4 and earlier allows remote attackers to assume a configured user's role with an empty password. The CheckUser method in ScadaServerEngine/MainLogic.cs accepted a null or empty password after matching only the supplied username. Network access and knowledge of a configured username are sufficient; successful authentication grants that account's role and associated control permissions.

The record

CVE
CVE-2024-47221
Published
Sep 22, 2024
Updated
Mar 19, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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-521Weak Password Requirements
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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