CVE-2021-32978
The programming protocol allows for a previously entered password and lock state to be read by an attacker.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The programming protocol allows for a previously entered password and lock state to be read by an attacker. If the previously entered password was successful, the attacker can then use the password to unlock Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.01% probability · 63th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-256, CWE-522
- Affected
- automationdirect/c0-10dd1e-d firmware · automationdirect/c0-10dd2e-d firmware · automationdirect/c0-10dre-d firmware · automationdirect/c0-10are-d firmware · automationdirect/c0-11dd1e-d firmware · automationdirect/c0-11dd2e-d firmware · automationdirect/c0-11dre-d firmware · automationdirect/c0-11are-d firmware · automationdirect/c0-12dd1e-d firmware · automationdirect/c0-12dd2e-d firmware · automationdirect/c0-12dre-d firmware · automationdirect/c0-12are-d firmware · automationdirect/c0-12dd1e-1-d firmware · automationdirect/c0-12dd2e-1-d firmware · automationdirect/c0-12dre-1-d firmware · automationdirect/c0-12are-1-d firmware · automationdirect/c0-12dd1e-2-d firmware · automationdirect/c0-12dd2e-2-d firmware · automationdirect/c0-12dre-2-d firmware · automationdirect/c0-12are-2-d firmware
- Source
- ics-cert@hq.dhs.gov
EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02Third Party Advisory, US Government Resource
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.