High severity7.5NVD Advisory· Published Jun 8, 2021· Updated Jun 17, 2026

CVE-2021-31340

Description

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.

Affected products

Siemens Foundation/Simatic Reader Rf610r Cmiit Firmware
cpe:2.3:o:siemens:simatic_reader_rf610r_cmiit_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf610r Etsi Firmware
cpe:2.3:o:siemens:simatic_reader_rf610r_etsi_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf610r Fcc Firmware
cpe:2.3:o:siemens:simatic_reader_rf610r_fcc_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf615r Cmiit Firmware
cpe:2.3:o:siemens:simatic_reader_rf615r_cmiit_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf615r Etsi Firmware
cpe:2.3:o:siemens:simatic_reader_rf615r_etsi_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf615r Fcc Firmware
cpe:2.3:o:siemens:simatic_reader_rf615r_fcc_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf650r Arib Firmware
cpe:2.3:o:siemens:simatic_reader_rf650r_arib_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf650r Cmiit Firmware
cpe:2.3:o:siemens:simatic_reader_rf650r_cmiit_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf650r Etsi Firmware
cpe:2.3:o:siemens:simatic_reader_rf650r_etsi_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf650r Fcc Firmware
cpe:2.3:o:siemens:simatic_reader_rf650r_fcc_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf680r Arib Firmware
cpe:2.3:o:siemens:simatic_reader_rf680r_arib_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf680r Cmiit Firmware
cpe:2.3:o:siemens:simatic_reader_rf680r_cmiit_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf680r Etsi Firmware
cpe:2.3:o:siemens:simatic_reader_rf680r_etsi_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf680r Fcc Firmware
cpe:2.3:o:siemens:simatic_reader_rf680r_fcc_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf685r Arib Firmware
cpe:2.3:o:siemens:simatic_reader_rf685r_arib_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf685r Cmiit Firmware
cpe:2.3:o:siemens:simatic_reader_rf685r_cmiit_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf685r Etsi Firmware
cpe:2.3:o:siemens:simatic_reader_rf685r_etsi_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Reader Rf685r Fcc Firmware
cpe:2.3:o:siemens:simatic_reader_rf685r_fcc_firmware:*:*:*:*:*:*:*:*
Range: >=3.0,<4.0
Siemens Foundation/Simatic Rf166c Firmware
cpe:2.3:o:siemens:simatic_rf166c_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf185c Firmware
cpe:2.3:o:siemens:simatic_rf185c_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf186c Firmware
cpe:2.3:o:siemens:simatic_rf186c_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf186ci Firmware
cpe:2.3:o:siemens:simatic_rf186ci_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf188c Firmware
cpe:2.3:o:siemens:simatic_rf188c_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf188ci Firmware
cpe:2.3:o:siemens:simatic_rf188ci_firmware:*:*:*:*:*:*:*:*
Range: >1.1,<1.3.2
Siemens Foundation/Simatic Rf360r Firmware
cpe:2.3:o:siemens:simatic_rf360r_firmware:*:*:*:*:*:*:*:*
Range: <2.0
Siemens Foundation/RF166Cllm-create7 versions
> V1.1 and < V1.3.2+ 6 more
- (no CPE)range: > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
- (no CPE)range: All versions > V1.1 and < V1.3.2
Siemens Foundation/SIMATIC RF185Cllm-create
Range: > V1.1 and < V1.3.2
Siemens Foundation/Reader RF610R CMIITllm-create2 versions
> V3.0 < V4.0+ 1 more
- (no CPE)range: > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
Siemens Foundation/SIMATIC Reader RF615R ETSIcpe-rescue7 versions
All versions > V3.0 < V4.0+ 6 more
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
- (no CPE)range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF610R FCCv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF650R ARIBv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF650R CMIITv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF650R FCCv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF680R ARIBv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF680R CMIITv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF680R FCCv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF685R ARIBv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF685R CMIITv5
Range: All versions > V3.0 < V4.0
Siemens/SIMATIC Reader RF685R FCCv5
Range: All versions > V3.0 < V4.0
Siemens Foundation/SIMATIC RF360Rcpe-rescue
Range: All versions < V2.0

Patches

Vulnerability mechanics

References

cert-portal.siemens.com/productcert/pdf/ssa-787292.pdfnvdMitigationPatchVendor Advisory

News mentions

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