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CVE-2026-12661— FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability

Quick assessment

Affected
Rockwell Automation FactoryTalk® Historian Machine Edition
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rockwell Automation FactoryTalk® Historian Machine Edition是美国Rockwell Automation基金会的一款工业实时数据采集与存储软件。 Rockwell Automation FactoryTalk® Historian Machine Edition Series C 7.101版本和Series B 5.202版本存在缓冲区错误漏洞，该漏洞源于Web接口存在缓冲区溢出，可能允许网络相邻的已认证攻击者发送特制请求，导致设备崩溃和无响应。

CVSS 4.8 · Medium EPSS 0.16% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
Rockwell Automation FactoryTalk® Historian Machine Edition Series C: 7.101 Series B: 5.202 affected
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I. Basic Information for CVE-2026-12661

Vulnerability Information
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Vulnerability Title
FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Rockwell Automation FactoryTalk® Historian Machine Edition 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rockwell Automation FactoryTalk® Historian Machine Edition是美国Rockwell Automation基金会的一款工业实时数据采集与存储软件。 Rockwell Automation FactoryTalk® Historian Machine Edition Series C 7.101版本和Series B 5.202版本存在缓冲区错误漏洞，该漏洞源于Web接口存在缓冲区溢出，可能允许网络相邻的已认证攻击者发送特制请求，导致设备崩溃和无响应。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rockwell Automation FactoryTalk® Historian Machine Edition Series C: 7.101 Series B: 5.202 -

II. Public POCs for CVE-2026-12661

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III. Intelligence Information for CVE-2026-12661

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Vendor Advisories for CVE-2026-12661 (1)

Same Patch Batch · Rockwell Automation · 2026-09-01 · 16 CVEs total

CVE-2026-9621 9.2 CRITICAL RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-19472 8.7 HIGH Rockwell Automation ArmorStart® LT Denial Of Service
CVE-2026-84235 8.7 HIGH Rockwell Automation 1756-ENBT Denial of Service Vulnerability
CVE-2026-9637 8.7 HIGH CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities
CVE-2026-9622 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-9625 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-9624 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2024-7952 8.7 HIGH DataEdgePlatform DataMosaix™ Private Cloud
CVE-2024-7953 8.7 HIGH DataEdgePlatform DataMosaix™ Private Cloud
CVE-2025-12768 8.6 HIGH FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
CVE-2026-16675 8.5 HIGH Rockwell Automation FactoryTalk® Activation Manager - Privilege Escalation
CVE-2026-12663 7.0 HIGH ControlFLASH ® – Improper Access Control
CVE-2026-9633 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-9634 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-19471 6.9 MEDIUM Rockwell Automation ArmorStart® LT Stored Cross-site scripting

IV. Related Vulnerabilities

Same product: FactoryTalk® Historian Machine Edition
Same vendor: Rockwell Automation
Same weakness: CWE-121

V. Comments for CVE-2026-12661

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