CVE-2020-28393

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An unauthenticated remote attacker could create a permanent denial-of-service condition by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an affected device on the SCALANCE XM-400, XR-500 (All versions prior to v6.4).

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-682

Affected software

Vendor	Product	Versions
n/a	SCALANCE XM-400, XR-500	All versions prior to v6.4

References

https://cert-portal.siemens.com/productcert/pdf/ssa-116379.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-10Third Party Advisory, US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-116379.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-10Third Party Advisory, US Government Resource

Timeline

Published: May 12, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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