Medium severity · published Sep 1, 2026
CVE-2026-12661
FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
4.8
CVSS
0.2%
EPSS
No
On KEV
Description
A denial-of-service security issue exists within FactoryTalk® Historian Machine Edition. A network adjacent attacker who is authenticated could send crafted requests to the web interface, resulting in buffer overflow conditions that may cause the device to crash and become unresponsive.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FH
FactoryTalk® Historian Machine Edition · Rockwell Automation
Series C: 7.101 Series B: 5.202 · source: vendor
Affected product
FH
FactoryTalk® Historian Machine Edition
Rockwell Automation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12661
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12661
www.rockwellautomation.com
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1796.html
More from FactoryTalk® Historian Machine Edition
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CVE-2025-12768
FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
