CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2021-31340
High (7.5) in siemens. EPSS 1.0% chance of exploitation in the next 30 days.
A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- siemens:simatic_reader_rf610r_cmiit_firmware
- siemens:simatic_reader_rf610r_etsi_firmware
- siemens:simatic_reader_rf610r_fcc_firmware
- siemens:simatic_reader_rf615r_cmiit_firmware
- siemens:simatic_reader_rf615r_etsi_firmware
- siemens:simatic_reader_rf615r_fcc_firmware
- siemens:simatic_reader_rf650r_arib_firmware
- siemens:simatic_reader_rf650r_cmiit_firmware
- siemens:simatic_reader_rf650r_etsi_firmware
- siemens:simatic_reader_rf650r_fcc_firmware
- siemens:simatic_reader_rf680r_arib_firmware
- siemens:simatic_reader_rf680r_cmiit_firmware
- siemens:simatic_reader_rf680r_etsi_firmware
- siemens:simatic_reader_rf680r_fcc_firmware
- siemens:simatic_reader_rf685r_arib_firmware
- siemens:simatic_reader_rf685r_cmiit_firmware
- siemens:simatic_reader_rf685r_etsi_firmware
- siemens:simatic_reader_rf685r_fcc_firmware
- siemens:simatic_rf166c_firmware
- siemens:simatic_rf185c_firmware
- siemens:simatic_rf186c_firmware
- siemens:simatic_rf186ci_firmware
- siemens:simatic_rf188c_firmware
- siemens:simatic_rf188ci_firmware
- siemens:simatic_rf360r_firmware