Medium severity5.5NVD Advisory· Published Dec 13, 2022· Updated Jun 17, 2026
CVE-2021-44694
CVE-2021-44694
Description
Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.
Affected products
170All versions < V2.9.7+ 1 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- Range: All versions < V2.9.7
All versions < V3.0.1+ 8 more
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- cpe:2.3:o:siemens:simatic_s7-plcsim_advanced_firmware:*:*:*:*:*:*:*:*Range: <5.0
cpe:2.3:o:siemens:simatic_s7-1200_cpu_1211c_firmware:*:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1211c_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1212c_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1214_fc_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1215_fc_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1217c_firmware:*:*:*:*:*:*:*:*range: <4.6.0
cpe:2.3:o:siemens:simatic_s7-1200_cpu_1212fc_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1212fc_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1214c_firmware:*:*:*:*:*:*:*:*range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1215c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1214fc_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_1215fc_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1211c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1212c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1212fc_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1214c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1214fc_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1215c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1215fc_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1200_cpu_12_1217c_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:siplus_s7-1200_cp_1243-1_rail_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:siplus_s7-1200_cp_1243-1_firmware:*:*:*:*:*:*:*:*Range: <4.6.0
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1507s_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1507s_f_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1508s_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1508s_f_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1510sp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1510sp-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511-1_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511c_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511c-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511f-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511f-1_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511t-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511tf-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512c_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512c-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512sp-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512spf-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513f-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513f-1_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1513r-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515-2_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_151511c-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_151511f-1_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515f-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515f-2_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515r-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515t-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1515tf-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516-3_dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516-3_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516-3_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516f-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516f-3_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516pro-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516pro_f_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516t-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1516tf-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517-3_dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517-3_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517-3_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517f-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517f-3_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1517tf-3_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_pn_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518f-4_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518f-4_pn\/dp_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518hf-4_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518t-4_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518tf-4_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_15pro-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_15prof-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_cpu_1513pro-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_cpu_1513prof-2_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:siplus_et_200sp_cp_1542sp-1_irc_tx_rail_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:siplus_et_200sp_cp_1543sp-1_isec_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:siplus_et_200sp_cp_1543sp-1_isec_tx_rail_firmware:*:*:*:*:*:*:*:*Range: <3.0.1
- cpe:2.3:o:siemens:simatic_et_200_sp_open_controller_cpu_1515sp_pc_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-1500_software_controller_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:siplus_tim_1531_irc_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:tim_1531_irc_firmware:-:*:*:*:*:*:*:*
All versions < V2.3.6+ 1 more
- (no CPE)range: All versions < V2.3.6
- (no CPE)range: All versions < V2.3.6
All versions < V2.9.7+ 9 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
All versions < V2.9.7+ 2 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
All versions < V2.9.7+ 6 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
All versions < V2.9.7+ 1 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
All versions < V3.0.1+ 5 more
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V2.9.7
All versions < V3.0.1+ 2 more
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V2.9.7
- Range: All versions < V21.9.7
- Range: All versions < V5.0
All versions < V2.9.7+ 2 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
All versions < V3.0.1+ 3 more
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- (no CPE)range: All versions < V3.0.1
- Range: All versions < V4.6.0
All versions < V2.9.7+ 1 more
- (no CPE)range: All versions < V2.9.7
- (no CPE)range: All versions < V2.9.7
- Range: All versions < V21.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V2.9.7
- Range: All versions < V3.0.1
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-382653.pdfnvdPatchVendor Advisory
News mentions
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