CVE-2021-33045 (GCVE-0-2021-33045)

Vulnerability from cvelistv5 – Published: 2021-09-15 21:50 – Updated: 2025-10-21 23:25
VLAI? CISA
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.
Severity ?
No CVSS data available.
CWE
  • Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
n/a Some Dahua IP Camera, Video Intercom, NVR, XVR devices Affected: Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX Buildtime before May, 2020, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, NVR devices NVR1XXX, NVR2XXX, NVR5XXX, and NVR6XX, XVR devices XVR4xxx, XVR5xxx, and XVR7xxx Buildtime before December, 2019.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2024-08-21

Due date: 2024-09-11

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Used in ransomware: Unknown

Notes: https://www.dahuasecurity.com/aboutUs/trustedCenter/details/582; https://nvd.nist.gov/vuln/detail/CVE-2021-33045

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      "id": "CVE-2021-33045",
      "lastModified": "2024-11-21T06:08:11.097",
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      "published": "2021-09-15T22:15:10.687",
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      "containers": "{\"cna\": {\"affected\": [{\"product\": \"Some Dahua IP Camera, Video Intercom, NVR, XVR devices\", \"vendor\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX Buildtime before May, 2020, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, NVR devices NVR1XXX, NVR2XXX, NVR5XXX, and NVR6XX, XVR devices XVR4xxx, XVR5xxx, and XVR7xxx Buildtime before December, 2019.\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"description\": \"Improper Authentication\", \"lang\": \"en\", \"type\": \"text\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2021-10-06T16:06:10.000Z\", \"orgId\": \"79ee569e-7d1e-4364-98f0-3a18e2a739ad\", \"shortName\": \"dahua\"}, \"references\": [{\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://www.dahuasecurity.com/support/cybersecurity/details/957\"}, {\"name\": \"20211005 [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)\", \"tags\": [\"mailing-list\", \"x_refsource_FULLDISC\"], \"url\": \"http://seclists.org/fulldisclosure/2021/Oct/13\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html\"}], \"x_legacyV4Record\": {\"CVE_data_meta\": {\"ASSIGNER\": \"cybersecurity@dahuatech.com\", \"ID\": \"CVE-2021-33045\", \"STATE\": \"PUBLIC\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"product_name\": \"Some Dahua IP Camera, Video Intercom, NVR, XVR devices\", \"version\": {\"version_data\": [{\"version_value\": \"Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX Buildtime before May, 2020, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, NVR devices NVR1XXX, NVR2XXX, NVR5XXX, and NVR6XX, XVR devices XVR4xxx, XVR5xxx, and XVR7xxx Buildtime before December, 2019.\"}]}}]}, \"vendor_name\": \"n/a\"}]}}, \"data_format\": \"MITRE\", \"data_type\": \"CVE\", \"data_version\": \"4.0\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"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.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Improper Authentication\"}]}]}, \"references\": {\"reference_data\": [{\"name\": \"https://www.dahuasecurity.com/support/cybersecurity/details/957\", \"refsource\": \"MISC\", \"url\": \"https://www.dahuasecurity.com/support/cybersecurity/details/957\"}, {\"name\": \"20211005 [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)\", \"refsource\": \"FULLDISC\", \"url\": \"http://seclists.org/fulldisclosure/2021/Oct/13\"}, {\"name\": \"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html\", \"refsource\": \"MISC\", \"url\": \"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html\"}]}}}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T23:42:19.573Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://www.dahuasecurity.com/support/cybersecurity/details/957\"}, {\"name\": \"20211005 [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)\", \"tags\": [\"mailing-list\", \"x_refsource_FULLDISC\", \"x_transferred\"], \"url\": \"http://seclists.org/fulldisclosure/2021/Oct/13\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html\"}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2024-08-21\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33045\"}}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-33045\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-05T15:03:50.889187Z\"}}}], \"timeline\": [{\"time\": \"2024-08-21T00:00:00+00:00\", \"lang\": \"en\", \"value\": \"CVE-2021-33045 added to CISA KEV\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-05T15:03:55.689Z\"}}]}",
      "cveMetadata": "{\"assignerOrgId\": \"79ee569e-7d1e-4364-98f0-3a18e2a739ad\", \"assignerShortName\": \"dahua\", \"cveId\": \"CVE-2021-33045\", \"datePublished\": \"2021-09-15T21:50:08.000Z\", \"dateReserved\": \"2021-05-17T00:00:00.000Z\", \"dateUpdated\": \"2025-07-30T01:37:58.699Z\", \"state\": \"PUBLISHED\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.