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CVE-20XX-?

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CVE-2021-33044

9.8 CRITICAL 100% exploit odds Drop everything exploited in the wild Fix listed Auth & access Device

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2021-05-17 00:00 UTC ReservedThe CVE id was reserved by its CNA
2021-09-15 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2024-08-21 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2024-09-11 Remediation deadlineCISA's due date for federal agencies to fix it
2026-06-17 03:54 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 100.0% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: a patch or advisory is linked.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2021-09-15 22:15 UTC
Last modified: 2026-06-17 03:54 UTC
Added to CISA KEV: 2024-08-21
Exploit probability: 100.0% · EPSS, next 30 days
Weakness: CWE-287 · Improper authentication
Record status: Analyzed

Affected

Dahuasecurity ipc-hum7xxx Firmware < 2.820.0000000.5.r.210705
Dahuasecurity ipc-hx3xxx Firmware < 2.800.0000000.29.r.210630
Dahuasecurity ipc-hx5xxx Firmware < 2.820.0000000.18.r.210705
Dahuasecurity sd1a1 Firmware < 2.812.0000007.0.r.210706
Dahuasecurity sd22 Firmware < 2.812.0000007.0.r.210706
Dahuasecurity sd49 Firmware < 2.812.0000007.0.r.210706
Dahuasecurity sd50 Firmware < 2.812.0000007.0.r.210706
Dahuasecurity sd52c Firmware < 2.812.0000007.0.r.210706

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-33044.md and follow it. Check whether this project is affected by CVE-2021-33044. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record