CVE-2026-12661

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.

  • Published Sep 1, 2026
  • CVSS 4.8 medium
  • 0.2% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-12661 at the National Vulnerability Database