CVE-2022-26026Public exploitNetwork attack vector

Configuration service interruption via invalid port assignment

Published May 25, 2022 · Updated Apr 15, 2025

Denial of service in SecureConfigValues in Open Automation Software OAS Platform 16.00.0112 allows remote attackers to stop configuration connections. The command accepts an unauthenticated configuration message on TCP port 58727 and applies an invalid or occupied TCP Port value, causing the engine to stop listening for new configuration connections. Remote attackers able to reach the configuration port can interrupt configuration communications without affecting confidentiality or integrity.

CVSS severity7.5
High
EPSS probability1.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in SecureConfigValues in Open Automation Software OAS Platform 16.00.0112 allows remote attackers to stop configuration connections. The command accepts an unauthenticated configuration message on TCP port 58727 and applies an invalid or occupied TCP Port value, causing the engine to stop listening for new configuration connections. Remote attackers able to reach the configuration port can interrupt configuration communications without affecting confidentiality or integrity.

The record

CVE
CVE-2022-26026
Published
May 25, 2022
Updated
Apr 15, 2025
Vendor
Open Automation Software
Product
OAS Platform
Classifications
CWE-306, T1499, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=V16.00.0112

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Automation Software · OAS Platformversion=V16.00.0112

Published CVSS scores

7.5Cisco TalosCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1499Endpoint Denial of Service
T0814Denial of Service

Public exploit references

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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