CVE-2021-20598

Description

Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R08/16/32/120SFCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to lockout a legitimate user by continuously trying login with incorrect password.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory mitsubishielectric.com
Affected: n/a MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU
Published at:
Updated at:

References

Link Tags
https://jvn.jp/vu/JVNVU98578731/index.html third party advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-010_en.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-20598?
CVE-2021-20598 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20598?
To fix CVE-2021-20598, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20598 being actively exploited in the wild?
It is possible that CVE-2021-20598 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20598?
CVE-2021-20598 affects n/a MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU.
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