{"cve":"CVE-2021-20049","nvd":{"published":"2021-12-23T02:15:06.583","modified":"2026-06-17T03:33:12.683","status":"Modified","description":"A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.","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:N","score":7.5},"cwes":["CWE-203","CWE-204"],"references":["https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0030","https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0030"],"products":["sonicwall:sma_100_firmware","sonicwall:sma_200_firmware","sonicwall:sma_210_firmware","sonicwall:sma_400_firmware","sonicwall:sma_410_firmware","sonicwall:sma_500v_firmware"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-20049","score":0.01391,"percentile":0.72348,"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."]}