CVE-2020-28393
High
Published: 12 May 2021
Published
12 May 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0043
63.3th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2020-28393 is a high-severity Incorrect Calculation (CWE-682) vulnerability in Siemens Scalance Xm-400 Firmware. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 36.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-20852
Vulnerability details
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).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
siemens
scalance xm-400 firmware
≤ 6.4
siemens
scalance xr524 firmware
≤ 6.4
siemens
scalance xr526 firmware
≤ 6.4
siemens
scalance xr528 firmware
≤ 6.4
siemens
scalance xr552 firmware
≤ 6.4
siemens
scalance xm416-4c firmware
≤ 6.4
siemens
scalance xm408-8c firmware
≤ 6.4
siemens
scalance xm408-4c firmware
≤ 6.4
siemens
scalance xm416-4c l3 firmware
≤ 6.4
siemens
scalance xm408-8c l3 firmware
≤ 6.4
+1 more product configuration(s) — see NVD for full list
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.