CVE-2022-43716

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) (All versions < V2.3), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SIMATIC CP 443-1 (6GK7443-1EX30-0XE0) (All versions < V3.3), SIMATIC CP 443-1 (6GK7443-1EX30-0XE1) (All versions < V3.3), SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0) (All versions < V3.3), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) (All versions < V2.3), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0) (All versions < V3.4.29), SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0) (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0) (All versions < V3.3), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0) (All versions < V3.4.29), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0) (All versions < V3.4.29), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.3.6), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.3.6). The webserver of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected product.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2023-04-11

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• siemens:simatic_cp_1242-7_v2_firmware
• siemens:simatic_cp_1243-1_dnp3_firmware
• siemens:simatic_cp_1243-1_firmware
• siemens:simatic_cp_1243-1_iec_firmware
• siemens:simatic_cp_1243-7_lte_eu_firmware
• siemens:simatic_cp_1243-7_lte_us_firmware
• siemens:simatic_cp_1243-8_irc_firmware
• siemens:simatic_cp_1542sp-1_firmware
• siemens:simatic_cp_1542sp-1_irc_firmware
• siemens:simatic_cp_1543sp-1_firmware
• siemens:simatic_cp_443-1_advanced_firmware
• siemens:simatic_cp_443-1_firmware
• siemens:simatic_ipc_diagbase_firmware
• siemens:simatic_ipc_diagmonitor_firmware
• siemens:siplus_et_200sp_cp_1542sp-1_irc_tx_rail_firmware
• siemens:siplus_et_200sp_cp_1543sp-1_isec_firmware
• siemens:siplus_et_200sp_cp_1543sp-1_isec_tx_rail_firmware
• siemens:siplus_net_cp_1242-7_v2_firmware
• siemens:siplus_net_cp_443-1_advanced_firmware
• siemens:siplus_net_cp_443-1_firmware
• siemens:siplus_s7-1200_cp_1243-1_firmware
• siemens:siplus_s7-1200_cp_1243-1_rail_firmware
• siemens:siplus_tim_1531_irc_firmware
• siemens:tim_1531_irc_firmware

References

• https://cert-portal.siemens.com/productcert/html/ssa-139628.html
• https://cert-portal.siemens.com/productcert/html/ssa-566905.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-566905.pdf
• https://cert-portal.siemens.com/productcert/html/ssa-139628.html
• https://cert-portal.siemens.com/productcert/html/ssa-566905.html

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