CVE-2021-33045KEV · OVERDUE

Dahua IP Camera Authentication Bypass Vulnerability

Critical · published September 15, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

773
days past CISA
deadline
CVSS v3.1
9.8
EPSS
100%
Percentile
99.9
In the wild
Confirmed
What it is

🚨 An attacker can slip past authentication on certain Dahua devices using just a crafty data packet — that’s all it takes! 🔥 It’s like having a bouncer at a club who lets anyone in just because they have a fancy invitation — no questions asked! This vulnerability is absolutely devastating: an attacker could gain unauthorized access to sensitive systems, leading to full control over the device. They could manipulate settings, steal data, and even disrupt operations without any trace. This isn't just a minor inconvenience; it's a serious risk to your security!

Put simply

It’s like having a bouncer at a club who lets anyone in just because they have a fancy invitation — no questions asked! CVE-2021-33045 allows attackers to bypass identity authentication during the login process by sending specially crafted malicious data packets. This means the system trusts a request without verifying the user's identity, granting them access to protected features.

What to do

This vulnerability is absolutely devastating: an attacker could gain unauthorized access to sensitive systems, leading to full control over the device. They could manipulate settings, steal data, and even disrupt operations without any trace. This isn't just a minor inconvenience; it's a serious risk to your security! Immediately patch your Dahua devices with the latest firmware updates to close this security gap. Ensure you review and tighten your network access controls and monitor for any unauthorized attempts to access your devices. Don't wait — this needs your attention now! You've got this! Follow these steps and you'll have your security back in top shape in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.99593 · 99.9th percentile
Published
2021-09-15T21:50Z
KEV added
2024-08-21 · due 2024-09-11
EPSS history
Timeline
  • 21 AUG 00:00Z
    Added to CISA KEV — remediate by Sep 11
    kev
  • 15 SEP 21:50Z
    The identity authentication bypass vulnerability found in some Dahua products during the login process
    cvelistv5