{"cve":"CVE-2021-31345","nvd":{"published":"2021-11-09T12:15:09.143","modified":"2026-06-17T03:51:35.153","status":"Modified","description":"A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":9.1},"cwes":["CWE-1284"],"references":["https://cert-portal.siemens.com/productcert/html/ssa-044112.html","https://cert-portal.siemens.com/productcert/html/ssa-114589.html","https://cert-portal.siemens.com/productcert/html/ssa-620288.html","https://cert-portal.siemens.com/productcert/html/ssa-845392.html","https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf"],"products":["siemens:apogee_modular_building_controller_firmware","siemens:apogee_modular_equiment_controller_firmware","siemens:apogee_pxc_compact_firmware","siemens:apogee_pxc_modular_firmware","siemens:capital_vstar","siemens:nucleus_net","siemens:nucleus_readystart_v3","siemens:nucleus_source_code","siemens:talon_tc_compact_firmware","siemens:talon_tc_modular_firmware"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-31345","score":0.0163,"percentile":0.76225,"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."]}