{"schema":"threatline.record/2","record":{"id":"CVE-2021-35247","aliases":[],"summary":"SolarWinds Serv-U Improper Input Validation Vulnerability","details":"SolarWinds Serv-U versions 15.2.5 and earlier contain an improper input validation vulnerability that allows attackers to build and send queries without sanitization.","categories":["Network & edge"],"product":"Serv-U","vendor":"SolarWinds","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-35247","source_modified_at":"2025-10-21T23:15:49.752Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Serv-U","vendor":"SolarWinds","versions":[{"lessThan":"15.3","status":"affected","version":"15.2.5 and previous versions","versionType":"custom"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-35247","source_modified_at":"2025-10-21T23:15:49.752Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Serv-U","ecosystem":null},"version":"15.3","basis":"first unaffected version stated in the CVE record"}],"cvss":4.3,"severity":"Medium","kev":{"listed":true,"date_added":"2022-01-21","due_date":"2022-02-04","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.03453,"percentile":0.88965,"score_date":"2026-10-23"},"published_at":"2022-01-07T22:39:50.564Z","modified_at":"2025-10-21T23:15:49.752Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2021-35247","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:15:49.752Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-35247","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35247","source":"CISA KEV"},{"source":"CVE List","url":"https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35247","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3_release_notes.htm","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35247","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"partial","assessed_at":"2025-01-29T20:23:12.218612Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:15:49.752Z","content_hash":"ec6c37590d505dda965db6b3a46b7f2c414f543062f6737bbbb5246de2bedff5"}}