CVE-2021-25676

Description

A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.

References

Link	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf	vendor advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02	third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-25676?: CVE-2021-25676 has been scored as a high severity vulnerability.
How to fix CVE-2021-25676?: To fix CVE-2021-25676, 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-2021-25676 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-25676 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-2021-25676?: CVE-2021-25676 affects Siemens RUGGEDCOM RM1224, Siemens SCALANCE M-800, Siemens SCALANCE S615, Siemens SCALANCE SC-600.

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Description

Category

CWE-307 – Improper Restriction of Excessive Authentication Attempts

References

Frequently Asked Questions