Critical severity9.8NVD Advisory· Published Apr 4, 2022· Updated Jun 17, 2026
CVE-2021-32986
CVE-2021-32986
Description
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.
Affected products
22- cpe:2.3:o:automationdirect:c0-10are-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-10dd1e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-10dd2e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-10dre-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-11are-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-11dd1e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-11dd2e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-11dre-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12are-1-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12are-2-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12are-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd1e-1-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd1e-2-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd1e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd2e-1-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd2e-2-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dd2e-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dre-1-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dre-2-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
- cpe:2.3:o:automationdirect:c0-12dre-d_firmware:*:*:*:*:*:*:*:*Range: <3.00
<v3.00+ 1 more
- (no CPE)range: <v3.00
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
1- www.cisa.gov/uscert/ics/advisories/icsa-21-166-02nvdThird Party AdvisoryUS Government Resource
News mentions
0No linked articles in our index yet.