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.
Scores
CVSS v3
7.5
EPSS
0.0039
EPSS Percentile
60.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-1285
CWE-129
Status
published
Products (7)
siemens/simatic_mv420_sr-b_body_firmware
< 7.0.6
siemens/simatic_mv420_sr-b_firmware
< 7.0.6
siemens/simatic_mv420_sr-p_body_firmware
< 7.0.6
siemens/simatic_mv420_sr-p_firmware
< 7.0.6
siemens/simatic_mv440_hr_firmware
< 7.0.6
siemens/simatic_mv440_sr_firmware
< 7.0.6
siemens/simatic_mv440_ur_firmware
< 7.0.6
Published
Mar 15, 2021
Tracked Since
Feb 18, 2026