CRITICAL🚩 CISA KEV⚡ EXPLOIT🇵🇱 Wersja polska

CVE-2021-22681

CVSS 9.8v3.1pub. 2021-03-03upd. 2026-03-06

Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers are communicating with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. Rockwell Automation Studio 5000 Logix Designer Versions 21 and later and RSLogix 5000: Versions 16 through 20 are vulnerable because an unauthenticated attacker could bypass this verification mechanism and authenticate with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800.

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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Rockwellautomation Compact Guardlogix 5370
HW
Rockwellautomation
all versions
Rockwellautomation Compact Guardlogix 5380
HW
Rockwellautomation
all versions
Rockwellautomation Compactlogix 1768
HW
Rockwellautomation
all versions
Rockwellautomation Compactlogix 1769
HW
Rockwellautomation
all versions
Rockwellautomation Compactlogix 5370
HW
Rockwellautomation
all versions
Rockwellautomation Compactlogix 5380
HW
Rockwellautomation
all versions
Rockwellautomation Compactlogix 5480
HW
Rockwellautomation
all versions
Rockwellautomation Controllogix 5550
HW
Rockwellautomation
all versions
Rockwellautomation Controllogix 5560
HW
Rockwellautomation
all versions
Rockwellautomation Controllogix 5570
HW
Rockwellautomation
all versions
Rockwellautomation Controllogix 5580
HW
Rockwellautomation
all versions
Rockwellautomation Drivelogix 1794 L34
HW
Rockwellautomation
all versions
Rockwellautomation Drivelogix 5560
HW
Rockwellautomation
all versions
Rockwellautomation Drivelogix 5730
HW
Rockwellautomation
all versions
Rockwellautomation Factorytalk Services Platform
APP
Rockwellautomation
≥ 2.10
Rockwellautomation Guardlogix 5570
HW
Rockwellautomation
all versions
Rockwellautomation Guardlogix 5580
HW
Rockwellautomation
all versions
Rockwellautomation Rslogix 5000
APP
Rockwellautomation
16 – 20
Rockwellautomation Softlogix 5800
HW
Rockwellautomation
all versions
Rockwellautomation Studio 5000 Logix Designer
APP
Rockwellautomation
≥ 21.0

CISA KEV — detailsi

Vendori: Rockwell
Producti: Multiple Products
Added to KEVi: March 5, 2026
Remediation deadline (US Federal)i: March 26, 2026(overdue)

🇺🇸CISA KEV (original)↗

Required action (CISA)i

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA descriptioni

Multiple Rockwell products contain an insufficient protected credentials vulnerability. Studio 5000 Logix Designer software may allow a key to be discovered. This key is used to verify Logix controllers are communicating with Rockwell Automation design software. If successfully exploited, this vulnerability could allow an unauthorized application to connect with Logix controllers. To leverage this vulnerability, an unauthorized user would require network access to the controller.

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