CVE-2021-33820
HIGH
7.5
CVSS Score
Published: June 18, 2021 at 06:32 PM UTC
Updated: June 17, 2026 at 03:55 AM UTC
2 products affected across 1 vendorCamera G3 Flex FirmwareCamera G3 Flex
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Camera G3 Flex· UIdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.mdx_refsource_MISCProductVendor Advisory
Source: [email protected]
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-cameraCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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