CVE-2022-3181Network attack vector

Unauthenticated crash via malformed HTTP request

Published Nov 2, 2022 · Updated Apr 16, 2025

Improper input validation in Trihedral Engineering Limited VTScada 12.0.38 and earlier allows remote attackers to crash the server. The HTTP request-processing path fails to reject a specifically malformed request, but the affected parser and field are undisclosed. The target must accept incoming HTTP(S) connections; the result is a service interruption on LAN-only or internet-facing deployments.

CVSS severity7.5
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Trihedral Engineering Limited VTScada 12.0.38 and earlier allows remote attackers to crash the server. The HTTP request-processing path fails to reject a specifically malformed request, but the affected parser and field are undisclosed. The target must accept incoming HTTP(S) connections; the result is a service interruption on LAN-only or internet-facing deployments.

The record

CVE
CVE-2022-3181
Published
Nov 2, 2022
Updated
Apr 16, 2025
Vendor
Trihedral Engineering Limited
Product
VTScada
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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 <=12.0.38

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trihedral Engineering Limited · VTScadaversion=0 <=12.0.38

Published CVSS scores

7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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