{"id":"CVE-2021-33045","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-33045","summary":"The identity authentication bypass vulnerability found in some Dahua products during the login process. Attackers can bypass device identity authentication by constructing malicious data packets.","details":"The identity authentication bypass vulnerability found in some Dahua products during the login process. Attackers can bypass device identity authentication by constructing malicious data packets.","published":"2021-09-15T22:15:10.687","modified":"2026-06-17T03:54:04.020","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.99556,"percentile":0.99945,"asOf":"2026-09-17"},"cisaKev":{"dateAdded":"2024-08-21","dueDate":"2024-09-11","knownRansomwareCampaignUse":false},"exploitsKnown":5,"affectedPackages":[],"fix":null,"references":[{"type":"EXPLOIT","url":"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html"},{"type":"EXPLOIT","url":"http://seclists.org/fulldisclosure/2021/Oct/13"},{"type":"ADVISORY","url":"https://www.dahuasecurity.com/support/cybersecurity/details/957"},{"type":"EXPLOIT","url":"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html"},{"type":"EXPLOIT","url":"http://seclists.org/fulldisclosure/2021/Oct/13"},{"type":"ADVISORY","url":"https://www.dahuasecurity.com/support/cybersecurity/details/957"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33045"}],"provenance":{"sources":["OSV.dev","NVD","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T03:54:04.020"}}