Vulnerability Details : CVE-2020-28393
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).
Vulnerability category: Denial of service
Products affected by CVE-2020-28393
- cpe:2.3:o:siemens:scalance_xm-400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xr524_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xr526_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xr528_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xr552_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm416-4c_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm408-8c_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm408-4c_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm416-4c_l3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm408-8c_l3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_xm408-4c_l3_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-28393
0.23%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-28393
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-28393
-
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.Assigned by: productcert@siemens.com (Primary)
References for CVE-2020-28393
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-10
Siemens SCALANCE XM-400 and XR-500 Devices | CISAThird Party Advisory;US Government Resource
-
https://cert-portal.siemens.com/productcert/pdf/ssa-116379.pdf
Vendor Advisory
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