Page generated: 07 Nov 2026, 05:09 UTC
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CVE-2021-33044

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.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
2.4/10
REALITY · THREAT PRIORITY
9.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 99.99%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 10 documents and public datasets.

Hype components

Headline sample (25%)
70/100
Press, 30 days (60%)
10/100
Grounded branding (15%)
0/100
HYPE TOTAL24/100

Sources and documents

Pasquale Pillitteri
Press · 27 Oct 2026, 08:17 · Dahua IP cameras hacked in Ukraine, attack via P2P Easy4IP - Pasquale Pillitteri
The Hacker News
Press · 27 Oct 2026, 06:34 · Attackers Hijack Dahua IP Cameras in Ukraine Using P2P Access and Auth Weaknesses - The Hacker News
CyberSecurityNews
Press · 04 Sep 2026, 07:00 · Dahua Camera Backdoor Survives Password Changes and Factory Resets on Compromised Devices - CyberSecurityNews
The Hacker News
Press · 19 Aug 2026, 07:00 · Hackers Compromised 14,500+ Dahua Devices Using Credential Attacks, Auth Bypasses, and P2P - The Hacker News
Infosecurity Magazine
Press · 04 Mar 2026, 08:00 · Surge in Attacks on Surveillance Cameras Linked to Iranian Hackers - Infosecurity Magazine
See all 10 source documents
Cybersecurity Dive
Press · 04 Mar 2026, 08:00 · Iran-nexus hackers target flaws in surveillance cameras - Cybersecurity Dive
Infosecurity Magazine
Press · 20 Dec 2024, 08:00 · Webcams and DVRs Vulnerable to HiatusRAT, FBI Warns - Infosecurity Magazine
Security Affairs
Press · 22 Aug 2024, 07:00 · U.S. CISA adds Dahua IP Camera, Linux Kernel and Microsoft Exchange Server bugs to its Known Exploited Vuln... - Security Affairs
BleepingComputer
Press · 07 Oct 2021, 07:00 · Unpatched Dahua cams vulnerable to unauthenticated remote access - BleepingComputer
Security Affairs
Press · 07 Oct 2021, 07:00 · PoC exploit for 2 flaws in Dahua cameras leaked online - Security Affairs

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 2.4 · reality 9.0 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 100.0%
Attention, last 30 days
2 distinct story titles; 2 press documents; 1 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:27.921902+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
15 Sep 2021, 21:36
First press mention
07 Oct 2021, 07:00
Added to the CISA KEV catalog
21 Aug 2024, 00:00
Latest press mention
27 Oct 2026, 08:17
Score calculated
05 Nov 2026, 13:58