SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-28393

An unauthenticated remote attacker could create a permanent denial-of-service condition by sending specially crafted OSPF packets.

HIGH 7.5EPSS 1.63%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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).

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
1.63% probability · 75th percentile
CISA KEV
Not listed
Weakness
CWE-682
Affected
siemens/scalance xm-400 firmware · siemens/scalance xr524 firmware · siemens/scalance xr526 firmware · siemens/scalance xr528 firmware · siemens/scalance xr552 firmware · siemens/scalance xm416-4c firmware · siemens/scalance xm408-8c firmware · siemens/scalance xm408-4c firmware · siemens/scalance xm416-4c l3 firmware · siemens/scalance xm408-8c l3 firmware · siemens/scalance xm408-4c l3 firmware
Source
productcert@siemens.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.