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CVE-2026-12661

FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability

MEDIUM
4.8
CVSS Score
Published: September 1, 2026 at 01:41 PM UTC
Updated: September 1, 2026 at 09:01 PM UTC
1 product affected across 1 vendorFactoryTalk Historian Machine Edition

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1796.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMRockwell
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-121

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