{"cve":"CVE-2021-22731","nvd":{"published":"2021-05-26T20:15:08.927","modified":"2026-06-17T03:37:40.280","status":"Modified","description":"Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior which could cause an unauthorized password change through HTTP / HTTPS when basic user information is known by a remote attacker.","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:H/A:H","score":9.8},"cwes":["CWE-640"],"references":["https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01","https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01"],"products":["schneider-electric:mcsesm043f23f0_firmware","schneider-electric:mcsesm053f1cs0_firmware","schneider-electric:mcsesm053f1cu0_firmware","schneider-electric:mcsesm063f2cs0_firmware","schneider-electric:mcsesm063f2cu0_firmware","schneider-electric:mcsesm083f23f0_firmware","schneider-electric:mcsesm083f23f0h_firmware","schneider-electric:mcsesm093f1cs0_firmware","schneider-electric:mcsesm093f1cu0_firmware","schneider-electric:mcsesm103f2cs0_firmware","schneider-electric:mcsesm103f2cs0h_firmware","schneider-electric:mcsesm103f2cu0_firmware","schneider-electric:mcsesm103f2cu0h_firmware","schneider-electric:mcsesm123f2lg0_firmware","schneider-electric:mcsesp083f23g0_firmware","schneider-electric:mcsesp083f23g0t_firmware"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-22731","score":0.014,"percentile":0.72506,"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."]}