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Known exploited vulnerability

CVE-2021-33045

criticalCVSS 3.1 9.8In CISA KEVEPSS 100%Published · n/a

The short answer

CVE-2021-33045 affects n/a Some Dahua IP Camera, Video Intercom, NVR, XVR devices and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-08-21: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-287.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Aug 21, 2024

Federal due date Sep 11, 2024

EPSS, next 30 days

100%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

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

Affected products

Some Dahua IP Camera, Video Intercom, NVR, XVR devices. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-33045 being exploited?

Yes. CISA added CVE-2021-33045 to its Known Exploited Vulnerabilities catalog on 2024-08-21, with a federal remediation due date of 2024-09-11.

How do I fix CVE-2021-33045?

CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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