CVE-2021-22681

CRITICALCISA KEV

9.8

Description

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/3/2021

Derniere modification3/6/2026

Sourcekev

Observations honeypot0

CISA KEV

FournisseurRockwell

ProduitMultiple Products

Nom vulnerabiliteRockwell Multiple Products Insufficient Protected Credentials Vulnerability

Date ajout KEV2026-03-05

Date limite remediation2026-03-26

Utilise dans ransomwareUnknown

Produits affectes

rockwellautomation:compact_guardlogix_5370rockwellautomation:compact_guardlogix_5380rockwellautomation:compactlogix_1768rockwellautomation:compactlogix_1769rockwellautomation:compactlogix_5370rockwellautomation:compactlogix_5380rockwellautomation:compactlogix_5480rockwellautomation:controllogix_5550rockwellautomation:controllogix_5560rockwellautomation:controllogix_5570rockwellautomation:controllogix_5580rockwellautomation:drivelogix_1794-l34rockwellautomation:drivelogix_5560rockwellautomation:drivelogix_5730rockwellautomation:factorytalk_services_platformrockwellautomation:guardlogix_5570rockwellautomation:guardlogix_5580rockwellautomation:rslogix_5000rockwellautomation:softlogix_5800rockwellautomation:studio_5000_logix_designer

Faiblesses (CWE)

CWE-522CWE-522

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03(ics-cert@hq.dhs.gov)

https://us-cert.cisa.gov/ics/advisories/icsa-21-056-03(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22681(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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