{"schema":"threatline.record/2","record":{"id":"CVE-2021-21551","aliases":[],"summary":"Dell dbutil Driver Insufficient Access Control Vulnerability","details":"Dell dbutil driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial-of-service (DoS), or information disclosure.","categories":["Unclassified"],"product":"dbutil Driver","vendor":"Dell","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-21551","source_modified_at":"2025-10-21T23:25:47.458Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"dbutil","vendor":"Dell","versions":[{"status":"affected","version":"2.3"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.8,"severity":"High","kev":{"listed":true,"date_added":"2022-03-31","due_date":"2022-04-21","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.80058,"percentile":0.99617,"score_date":"2026-10-23"},"published_at":"2021-05-04T15:15:21.388Z","modified_at":"2025-10-21T23:25:47.458Z","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-2021-21551","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:25:47.458Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/cve_2021_21551_dbutil_memmove.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-05-04"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49893","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-05-21"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-21551","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Exploit-DB","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21551","source":"CISA KEV"},{"source":"CVE List","url":"https://www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerability","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21551","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":"total","assessed_at":"2025-02-07T12:41:16.782641Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"Dell DBUtil_2_3.sys IOCTL memmove","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/cve_2021_21551_dbutil_memmove.rb","date":"2021-05-04","added":"2026-04-22","check":true},{"source":"Exploit-DB","kind":"Local exploit","name":"DELL dbutil_2_3.sys 2.3 - Arbitrary Write to Local Privilege Escalation (LPE)","url":"https://www.exploit-db.com/exploits/49893","date":"2021-05-21","added":"2021-05-21","verified":false}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2025-10-21T23:25:47.458Z","content_hash":"ce4f16beb1486ada198d5d769cd92d58cfbf17b5731afce57e21d91a25d79de8"}}