Vulnerability · Published Sep 1, 2026 · Assigned by Rockwell
CVE-2026-12661FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
Medium 4.8
In plain English
A medium-severity stack buffer overflow in FactoryTalk® Historian Machine Edition from Rockwell Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 4.0)4.8Medium
Exploit odds (30 days)0.2%top 86.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rockwell Automation | FactoryTalk® Historian Machine Edition | Series C: 7.101 Series B: 5.202 |
Weakness: CWE-121 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N