CVE-2021-32986

EUVD-2021-19707
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
icscertCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 51%
Affected Products (NVD)
VendorProductVersion
automationdirectc0-10dd1e-d_firmware
𝑥
< 3.00
automationdirectc0-10dd2e-d_firmware
𝑥
< 3.00
automationdirectc0-10dre-d_firmware
𝑥
< 3.00
automationdirectc0-10are-d_firmware
𝑥
< 3.00
automationdirectc0-11dd1e-d_firmware
𝑥
< 3.00
automationdirectc0-11dd2e-d_firmware
𝑥
< 3.00
automationdirectc0-11dre-d_firmware
𝑥
< 3.00
automationdirectc0-11are-d_firmware
𝑥
< 3.00
automationdirectc0-12dd1e-d_firmware
𝑥
< 3.00
automationdirectc0-12dd2e-d_firmware
𝑥
< 3.00
automationdirectc0-12dre-d_firmware
𝑥
< 3.00
automationdirectc0-12are-d_firmware
𝑥
< 3.00
automationdirectc0-12dd1e-1-d_firmware
𝑥
< 3.00
automationdirectc0-12dd2e-1-d_firmware
𝑥
< 3.00
automationdirectc0-12dre-1-d_firmware
𝑥
< 3.00
automationdirectc0-12are-1-d_firmware
𝑥
< 3.00
automationdirectc0-12dd1e-2-d_firmware
𝑥
< 3.00
automationdirectc0-12dd2e-2-d_firmware
𝑥
< 3.00
automationdirectc0-12dre-2-d_firmware
𝑥
< 3.00
automationdirectc0-12are-2-d_firmware
𝑥
< 3.00
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02
https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02