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CVE-2021-27474Rockwell Automation FactoryTalk AssetCentre Use of Potentially Dangerous Function

Description

Rockwell Automation FactoryTalk AssetCentre v10.00 and earlier does not properly restrict all functions relating to IIS remoting services. This vulnerability may allow a remote, unauthenticated attacker to modify sensitive data in FactoryTalk AssetCentre.

Timeline

  1. ID reserved

    By icscert

  2. · 13 months later

    Published

  3. · 3 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2021-27474, by who scored it
Scored byCVSSScoreVector
icscertCNA (assigner)3.1Critical10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS (exploitation in 30 days)
1.6% · top 24% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.

Affected products

What to do

Solution: Rockwell Automation encourages users of the affected versions of FactoryTalk AssetCentre to update to AssetCentre v11 (or above) to addresses these vulnerabilities. For more information about these vulnerabilities and mitigations please see Rockwell Automation’s publication KnowledgeBase ID: PN1559

Solution: As an additional mitigation, Rockwell Automation encourages users who are unable to upgrade or are concerned about unauthorized client connections to use built in security features found within FactoryTalk AssetCentre. Users should follow guidance found in QA46277. IPsec would minimize exposure to unauthorized clients and has been tested in FactoryTalk AssetCentre v9-v11

Workaround: Rockwell Automation recommends the following software/PC-based mitigation strategies: Run all software as User, not as an Administrator, to minimize the impact of malicious code on the infected system. Use Microsoft AppLocker or other similar allow list applications to help mitigate risk. Information on using AppLocker with Rockwell Automation products is available at Knowledge Base Article QA17329 Ensure the least-privilege user principle is followed, and user/service account access to shared resources (such as a database) is only granted with a minimum number of rights as needed.

Workaround: Rockwell Automation recommends the following general mitigations: Use trusted software, software patches, antivirus/antimalware programs and interact only with trusted web sites and attachments. Minimize network exposure for all control system devices and/or systems and ensure they are not accessible from the Internet. For further information about the risks of unprotected Internet accessible control systems, please see Knowledgebase Article PN715 Locate control system networks and devices behind firewalls and isolate them from the business network. When remote access is required, use secure methods, such as virtual private networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize a VPN is only as secure as the connected devices.

References

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .