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CVE-2026-9637— CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities

Quick assessment

Affected
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580
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.

在上方表格中列出的受影响罗克韦尔 Logix 平台中存在一个拒绝服务（DoS）安全漏洞。该安全漏洞源于在处理 CIP 消息时对输入长度进行不当校验。这可能导致发生严重的不可恢复故障（MNRF, Major NonRecoverable Fault），必须通过断电重启（power cycle）才能恢复。

CVSS 8.7 · High
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I. Basic Information for CVE-2026-9637

Vulnerability Information
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Vulnerability Title
CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
A denial-of-service security issue exists in the affected Logix platforms listed in the table above. The security issue stems from improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580 V33 and prior, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 -

II. Public POCs for CVE-2026-9637

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-9637

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Vendor Advisories for CVE-2026-9637 (1)

Same Patch Batch · Rockwell Automation · 2026-09-01 · 14 CVEs total

CVE-2026-9621 9.2 CRITICAL 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-2026-9622 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-84235 8.7 HIGH Rockwell Automation 1756-ENBT Denial of Service Vulnerability
CVE-2026-19472 8.7 HIGH Rockwell Automation ArmorStart® LT Denial Of Service
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-2026-9634 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-9633 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-12663 7.0 HIGH ControlFLASH ® – Improper Access Control
CVE-2026-19471 6.9 MEDIUM Rockwell Automation ArmorStart® LT Stored Cross-site scripting
CVE-2026-12661 4.8 MEDIUM FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability

IV. Related Vulnerabilities

Same vendor: Rockwell Automation
Same weakness: CWE-119

V. Comments for CVE-2026-9637

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