CVE-2022-23402

Alarm suppression via hard-coded CAMS credentials

Published Mar 11, 2022 · Updated Aug 3, 2024

Use of hard-coded credentials in Yokogawa CENTUM VP and Exaopc CAMS servers allows remote attackers to suppress alarms. The CAMS server accepts a malformed packet authenticated with a password embedded in affected releases, exposing every server function to the sender. Exploitation is limited to an adjacent network and requires user interaction; the documented consequence includes alarm suppression.

CVSS severity7.8
High
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of hard-coded credentials in Yokogawa CENTUM VP and Exaopc CAMS servers allows remote attackers to suppress alarms. The CAMS server accepts a malformed packet authenticated with a password embedded in affected releases, exposing every server function to the sender. Exploitation is limited to an adjacent network and requires user interaction; the documented consequence includes alarm suppression.

The record

CVE
CVE-2022-23402
Published
Mar 11, 2022
Updated
Aug 3, 2024
Vendor
Yokogawa Electric Corporation
Product
Exaopc
Classifications
CWE-798, T1078.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=versions from R3.72.00 to R3.79.00

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Yokogawa Electric Corporation · Exaopcversion=versions from R3.72.00 to R3.79.00
Yokogawa Electric Corporation · CENTUM VPversion=versions from R5.01.00 to R5.04.20; version=versions from R6.01.00 to R6.08.00

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8Yokogawa Electric CorporationCVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:C/C:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default 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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