Threats / Dahua / CVE-2021-33045
CVE-2021-33045
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Dahua IP Camera Firmware vulnerability
Dahua IP camera firmware contains an authentication bypass vulnerability exploitable when clients specify the loopback device during authentication, allowing unauthenticated access.
Verdict
Today item — known-exploited.
An authentication bypass in Dahua IP cameras enables attackers to circumvent credential verification by manipulating loopback device parameters. Active exploitation in the wild demonstrates immediate risk to deployed camera infrastructure.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-08-21).
Probability (EPSS)
EPSS 0.99556 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Dahua, IP Camera Firmware. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-287 Improper Authentication — weakness family: Authentication.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft an authentication request specifying the loopback device to bypass credential validation.
Business
Unauthorized access to camera systems compromises physical security monitoring and enables reconnaissance of protected facilities.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I gain unauthenticated access to camera management interfaces and extract configuration or video streams.
Business
Loss of confidentiality of surveillance data and exposure of network topology creates liability and regulatory compliance violations.
3
Lateral reach — past segmentation narrative 3
Attacker
I modify camera settings, disable recording, or redirect feeds to cover malicious activity.
Business
Compromised security infrastructure fails to detect or deter physical threats, increasing exposure to theft, sabotage, or other crimes.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05