CVE-2021-31889

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
siemensCNA
7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 71%
VendorProductVersion
siemenscapital_vstar
*
siemensnucleus_net
*
siemensnucleus_readystart_v3
𝑥
< 2017.02.3
siemensnucleus_source_code
*
siemensapogee_modular_building_controller_firmware
*
siemensapogee_modular_equiment_controller_firmware
*
siemensapogee_pxc_compact_firmware
*
siemensapogee_pxc_modular_firmware
*
siemenstalon_tc_compact_firmware
*
siemenstalon_tc_modular_firmware
*
siemensapogee_modular_building_controller_firmware
*
𝑥
= Vulnerable software versions