{"cve":"CVE-2022-46143","nvd":{"published":"2022-12-13T16:15:25.137","modified":"2026-06-17T05:11:17.103","status":"Modified","description":"Affected devices do not check the TFTP blocksize correctly. This could allow an authenticated attacker to read from an uninitialized buffer that potentially contains previously allocated data.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":5.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","score":2.7},"cwes":["CWE-1284"],"references":["https://cert-portal.siemens.com/productcert/html/ssa-180704.html","https://cert-portal.siemens.com/productcert/html/ssa-413565.html","https://cert-portal.siemens.com/productcert/pdf/ssa-180704.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-413565.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-180704.pdf"],"products":["siemens:ruggedcom_rm1224_lte\\(4g\\)_eu_firmware","siemens:ruggedcom_rm1224_lte\\(4g\\)_nam_firmware","siemens:scalance_m804pb_firmware","siemens:scalance_m812-1_adsl-router_firmware","siemens:scalance_m816-1_adsl-router_firmware","siemens:scalance_m826-2_shdsl-router_firmware","siemens:scalance_m874-2_firmware","siemens:scalance_m874-3_firmware","siemens:scalance_m876-3_firmware","siemens:scalance_m876-4_firmware","siemens:scalance_mum853-1_firmware","siemens:scalance_mum856-1_firmware","siemens:scalance_s615_eec_firmware","siemens:scalance_s615_firmware","siemens:scalance_sc622-2c_firmware","siemens:scalance_sc626-2c_firmware","siemens:scalance_sc632-2c_firmware","siemens:scalance_sc636-2c_firmware","siemens:scalance_sc642-2c_firmware","siemens:scalance_sc646-2c_firmware","siemens:scalance_w1748-1_m12_firmware","siemens:scalance_w1788-1_m12_firmware","siemens:scalance_w1788-2_eec_m12_firmware","siemens:scalance_w1788-2_m12_firmware","siemens:scalance_w1788-2ia_m12_firmware","siemens:scalance_w721-1_rj45_firmware","siemens:scalance_w722-1_rj45_firmware","siemens:scalance_w734-1_rj45_firmware","siemens:scalance_w738-1_m12_firmware","siemens:scalance_w748-1_m12_firmware","siemens:scalance_w761-1_rj45_firmware","siemens:scalance_w774-1_m12_eec_firmware","siemens:scalance_w774-1_m12_rj45_firmware","siemens:scalance_w774-1_rj45_firmware","siemens:scalance_w778-1_m12_eec_firmware","siemens:scalance_w778-1_m12_firmware","siemens:scalance_w786-1_rj45_firmware","siemens:scalance_w786-2_rj45_firmware","siemens:scalance_w786-2_sfp_firmware","siemens:scalance_w786-2ia_rj45_firmware","siemens:scalance_w788-1_m12_firmware","siemens:scalance_w788-1_rj45_firmware","siemens:scalance_w788-2_m12_eec_firmware","siemens:scalance_w788-2_m12_firmware","siemens:scalance_wam763-1_firmware","siemens:scalance_wam766-1_6ghz_firmware","siemens:scalance_wam766-1_ecc_firmware","siemens:scalance_wam766-1_firmware","siemens:scalance_wum763-1_firmware","siemens:scalance_wum766-1_6ghz_firmware"],"source":"nvd","synced_at":"2026-10-19T21:37:28.463369388+00:00"},"epss":{"cve":"CVE-2022-46143","score":0.00746,"percentile":0.54842,"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."]}