{"cve":"CVE-2023-38380","nvd":{"published":"2023-12-12T12:15:11.477","modified":"2026-06-17T06:10:02.430","status":"Modified","description":"A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE (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 1543-1 (6GK7543-1AX00-0XE0) (All versions < V3.0.37), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SINAMICS S210 (6SL5...) (All versions >= V6.1 < V6.1 HF2), 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 1543-1 (6AG1543-1AX00-2XE0) (All versions < V3.0.37). The webserver implementation of the affected products does not correctly release allocated memory after it has been used.\r\n\r\nAn attacker with network access could use this vulnerability to cause a denial-of-service condition in the webserver of the affected product.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-401"],"references":["https://cert-portal.siemens.com/productcert/html/ssa-139628.html","https://cert-portal.siemens.com/productcert/html/ssa-625862.html","https://cert-portal.siemens.com/productcert/html/ssa-693975.html","https://cert-portal.siemens.com/productcert/pdf/ssa-693975.pdf","https://cert-portal.siemens.com/productcert/html/ssa-139628.html"],"products":["siemens:6ag1543-1ax00-2xe0_firmware","siemens:6gk7243-8rx30-0xe0_firmware","siemens:6gk7543-1ax00-0xe0_firmware","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_firmware","siemens:sinamics_s210_firmware"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2023-38380","score":0.00956,"percentile":0.61439,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}