Summary
Successful exploitation of these vulnerabilities could crash the device being accessed; an out-of-bounds write condition may allow remote code execution.
The following versions of Rockwell Automation Historian ME are affected:
- Series B 5.202 (CVE-2025-12768, CVE-2026-12661)
- Series C 7.101 (CVE-2025-12768, CVE-2026-12661)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 8 | Rockwell Automation | Rockwell Automation Historian ME | Out-of-bounds Write, Stack-based Buffer Overflow |
Background
- Critical Infrastructure Sectors: Chemical, Critical Manufacturing, Food and Agriculture, Healthcare and Public Health, Water and Wastewater Systems
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
CVE-2025-12768
A security issue exists within FactoryTalk® Historian Machine Edition. An attacker with low-level authentication could exploit this vulnerability to achieveremote code execution on the affected device.
Affected Products
Rockwell Automation Historian ME
Vendor:
Rockwell Automation
Product Version:
Rockwell Automation Series B: 5.202, Rockwell Automation Series C: 7.101
Product Status:
known_affected
Relevant CWE: CWE-787 Out-of-bounds Write
Metrics
CVE-2026-12661
A denial-of-service security issue exists within FactoryTalk® Historian Machine Edition. A network adjacent attacker who is authenticated could send craftedrequests to the web interface, resulting in buffer overflow conditions that may cause the device to crash and become unresponsive.
Affected Products
Rockwell Automation Historian ME
Vendor:
Rockwell Automation
Product Version:
Rockwell Automation Series B: 5.202, Rockwell Automation Series C: 7.101
Product Status:
known_affected
Relevant CWE: CWE-121 Stack-based Buffer Overflow
Metrics
Acknowledgments
- Rockwell Automation reported these vulnerabilities to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-09-01
| Date | Revision | Summary |
|---|---|---|
| 2026-09-01 | 1 | Initial Publication |