{"id":"CVE-2021-22731","aliases":["EUVD-2021-9866","GHSA-6q5v-82v5-mpf9"],"status":"published","title":"Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed...","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.014,"percentile":0.72854,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-640"],"published":"2021-05-26T19:19:23Z","modified":"2026-06-17T03:37:40Z","products":[{"vendor":"schneider-electric","product":"mcsesm043f23f0_firmware"},{"vendor":"schneider-electric","product":"mcsesm053f1cs0_firmware"},{"vendor":"schneider-electric","product":"mcsesm053f1cu0_firmware"},{"vendor":"schneider-electric","product":"mcsesm063f2cs0_firmware"},{"vendor":"schneider-electric","product":"mcsesm063f2cu0_firmware"},{"vendor":"schneider-electric","product":"mcsesm083f23f0_firmware"},{"vendor":"schneider-electric","product":"mcsesm083f23f0h_firmware"},{"vendor":"schneider-electric","product":"mcsesm093f1cs0_firmware"},{"vendor":"schneider-electric","product":"mcsesm093f1cu0_firmware"},{"vendor":"schneider-electric","product":"mcsesm103f2cs0_firmware"},{"vendor":"schneider-electric","product":"mcsesm103f2cs0h_firmware"},{"vendor":"schneider-electric","product":"mcsesm103f2cu0_firmware"},{"vendor":"schneider-electric","product":"mcsesm103f2cu0h_firmware"},{"vendor":"schneider-electric","product":"mcsesm123f2lg0_firmware"},{"vendor":"schneider-electric","product":"mcsesp083f23g0_firmware"},{"vendor":"schneider-electric","product":"mcsesp083f23g0t_firmware"}],"references":[{"url":"https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22731"},{"url":"https://github.com/advisories/GHSA-6q5v-82v5-mpf9"}],"sources":{"cve":[{"id":"CVE-2021-22731","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.","status":"published","published":"2021-05-26T19:19:23Z","modified":"2024-08-03T18:51:06.977Z","cwes":["CWE-640"],"updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-9866","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.","status":"published","published":"2021-05-26T19:19:23Z","modified":"2024-08-03T18:51:06Z","updated_at":"2026-11-03T03:25:01.606931Z"}],"ghsa":[{"id":"GHSA-6q5v-82v5-mpf9","title":"Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed...","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.","status":"published","published":"2022-05-24T19:03:17Z","modified":"2023-01-29T05:07:45Z","cwes":["CWE-640"],"updated_at":"2026-11-02T14:46:11.123221Z"}],"nvd":[{"id":"CVE-2021-22731","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.","status":"published","published":"2021-05-26T20:15:08.927Z","modified":"2026-06-17T03:37:40.28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-640"],"updated_at":"2026-11-02T14:06:53.987491Z"}]}}