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CVE-2021-33045: Dahua IP Camera Authentication Bypass Vulnerability

criticalknown exploitedpublic exploitCVE-2021-33045
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Dahua IP cameras and related products contain an authentication bypass vulnerability when the loopback device is specified by the client during authentication.

CSIRTS triage

vendor: Dahuaproduct: IP CameraAuthentication bypass
What
There is an authentication bypass vulnerability when the loopback device is specified by the client during authentication.
Who is affected
Dahua IP cameras and related products are affected.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to the latest firmware to mitigate the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-08-21
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-33045

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-33045coverage & exploitation statusNVD · CVE.org

Recent advisories for Dahua IP Camera

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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