CVE-2021-27450

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-25 · updated 2026-06-17
Weakness: CWE-326

Description

SSH server configuration file does not implement some best practices. This could lead to a weakening of the SSH protocol strength, which could lead to additional misconfiguration or be leveraged as part of a larger attack on the MU320E (all firmware versions prior to v04A00.1).

Affected products

MU320E: before 04a00.1 — fixed in 04a00.1

How to fix

Upgrade to a fixed version: MU320E 04a00.1. Check the vendor advisory for mitigations.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-082-02
https://us-cert.cisa.gov/ics/advisories/icsa-21-082-02

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