CVE-2020-5527

Description

When MELSOFT transmission port (UDP/IP) of Mitsubishi Electric MELSEC iQ-R series (all versions), MELSEC iQ-F series (all versions), MELSEC Q series (all versions), MELSEC L series (all versions), and MELSEC F series (all versions) receives massive amount of data via unspecified vectors, resource consumption occurs and the port does not process the data properly. As a result, it may fall into a denial-of-service (DoS) condition. The vendor states this vulnerability only affects Ethernet communication functions.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.47%
Vendor Advisory mitsubishielectric.com
Affected: Mitsubishi Electric Corporation MELSOFT transmission port (UDP/IP) of multiple Mitsubishi Electric MELSEC series
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2019-005_en.pdf vendor advisory
https://jvn.jp/en/vu/JVNVU91553662/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5527?
CVE-2020-5527 has been scored as a high severity vulnerability.
How to fix CVE-2020-5527?
To fix CVE-2020-5527, 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-2020-5527 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5527 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5527?
CVE-2020-5527 affects Mitsubishi Electric Corporation MELSOFT transmission port (UDP/IP) of multiple Mitsubishi Electric MELSEC series.
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