{"schema":"threatline.record/2","record":{"id":"CVE-2021-30116","aliases":[],"summary":"Kaseya Virtual System/Server Administrator (VSA) Information Disclosure Vulnerability","details":"Kaseya Virtual System/Server Administrator (VSA) contains an information disclosure vulnerability allowing an attacker to obtain the sessionId that can be used to execute further attacks against the system.","categories":["Unclassified"],"product":"Virtual System/Server Administrator (VSA)","vendor":"Kaseya","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-30116","source_modified_at":"2026-08-14T03:55:30.740Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"n/a","vendor":"n/a","versions":[{"version":"n/a","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":10,"severity":"Critical","kev":{"listed":true,"date_added":"2021-11-03","due_date":"2021-11-17","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Known"},"epss":{"probability":0.85735,"percentile":0.99728,"score_date":"2026-10-23"},"published_at":"2021-07-09T00:00:00.000Z","modified_at":"2026-08-14T03:55:30.740Z","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-2021-30116","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-08-14T03:55:30.740Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-30116.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-30116","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Nuclei","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30116","source":"CISA KEV"},{"source":"CVE List","url":"https://csirt.divd.nl/2021/07/04/Kaseya-Case-Update-2/","tags":["x_transferred"]},{"source":"CVE List","url":"https://helpdesk.kaseya.com/hc/en-gb/articles/4403440684689-Important-Notice-July-2nd-2021","tags":["x_transferred"]},{"source":"CVE List","url":"https://csirt.divd.nl/2021/07/07/Kaseya-Limited-Disclosure/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.secpod.com/blog/kaseya-vsa-zero-day-by-revil/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30116","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2021-07-06T00:00:00+00:00"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"Kaseya VSA < 9.5.7 - Credential Disclosure via Windows Agent","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-30116.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-08-14T03:55:30.740Z","content_hash":"74dacfc5a1c3ce727f9a606f0e5022b6ec5b8744208ce1ee59e286cbc373c648"}}