Vulnerability Details : CVE-2023-35920
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.
Vulnerability category: Denial of service
Products affected by CVE-2023-35920
- cpe:2.3:o:siemens:simatic_mv540_h_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_mv540_s_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_mv550_h_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_mv550_s_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_mv560_u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_mv560_x_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-35920
0.73%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-35920
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
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 | |
|
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
|
Siemens AG |
CWE ids for CVE-2023-35920
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: productcert@siemens.com (Secondary)
References for CVE-2023-35920
-
https://cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf
Vendor Advisory
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