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IcscertCVELIST:CVE-2021-32986

HistoryApr 04, 2022 - 7:45 p.m.

CVE-2021-32986 Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel

2022-04-0419:45:56

CWE-288

icscert

www.cve.org

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

57.1%

JSON

After Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, the unlocked state does not timeout. If the programming software is interrupted, the PLC remains unlocked. All subsequent programming connections are allowed without authorization. The PLC is only relocked by a power cycle, or when the programming software disconnects correctly.

CNA Affected

[
  {
    "product": "CLICK PLC CPU Modules: C0-1x CPUs",
    "vendor": "Automation Direct",
    "versions": [
      {
        "lessThan": "3.00",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

www.cisa.gov/uscert/ics/advisories/icsa-21-166-02

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

57.1%

JSON

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