CVE-2020-25241
A vulnerability has been identified in SIMATIC MV400 family (All Versions < V7.0.6).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability has been identified in SIMATIC MV400 family (All Versions < V7.0.6). The underlying TCP stack of the affected products does not correctly validate the sequence number for incoming TCP RST packages. An attacker could exploit this to terminate arbitrary TCP sessions.
- 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
- 1.07% probability · 65th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1285, CWE-129
- Affected
- siemens/simatic mv440 sr firmware · siemens/simatic mv440 hr firmware · siemens/simatic mv440 ur firmware · siemens/simatic mv420 sr-b firmware · siemens/simatic mv420 sr-p firmware · siemens/simatic mv420 sr-b body firmware · siemens/simatic mv420 sr-p body firmware
- Source
- productcert@siemens.com
EPSS 1.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.