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CVE-2021-32978

HIGHCVSS 7.5/10EPSS 0.97%

Last modified

CVE-2021-32978 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AutomationdirectC0-10dd1e-D Firmware< 3.00
AutomationdirectC0-10dd2e-D Firmware< 3.00
AutomationdirectC0-10dre-D Firmware< 3.00
AutomationdirectC0-10are-D Firmware< 3.00
AutomationdirectC0-11dd1e-D Firmware< 3.00
AutomationdirectC0-11dd2e-D Firmware< 3.00
AutomationdirectC0-11dre-D Firmware< 3.00
AutomationdirectC0-11are-D Firmware< 3.00
AutomationdirectC0-12dd1e-D Firmware< 3.00
AutomationdirectC0-12dd2e-D Firmware< 3.00
AutomationdirectC0-12dre-D Firmware< 3.00
AutomationdirectC0-12are-D Firmware< 3.00
AutomationdirectC0-12dd1e-1-D Firmware< 3.00
AutomationdirectC0-12dd2e-1-D Firmware< 3.00
AutomationdirectC0-12dre-1-D Firmware< 3.00
AutomationdirectC0-12are-1-D Firmware< 3.00
AutomationdirectC0-12dd1e-2-D Firmware< 3.00
AutomationdirectC0-12dd2e-2-D Firmware< 3.00
AutomationdirectC0-12dre-2-D Firmware< 3.00
AutomationdirectC0-12are-2-D Firmware< 3.00

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-32978?
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.
How severe is CVE-2021-32978?
CVE-2021-32978 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.
How do I fix CVE-2021-32978?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-32978?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST