HOMEVULNERABILITIESCVE-2021-44530
CRITICAL

CVE-2021-44530

CWE-20Published: January 14, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An injection vulnerability exists in a third-party library used in UniFi Network Version 6.5.53 and earlier (Log4J CVE-2021-44228) allows a malicious actor to control the application.

NVD Source

Technical Analysis

CVE-2021-44530 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

ui1 product(s)
unifi network controller
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://community.ui.com/releases/Security-Advisory-Bulletin-023-023/808a1db0-5f8e-4b91-9097-9822f3f90207
PATCHhttps://community.ui.com/releases/Security-Advisory-Bulletin-023-023/808a1db0-5f8e-4b91-9097-9822f3f90207

All References (2)

→
https://community.ui.com/releases/Security-Advisory-Bulletin-023-023/808a1db0-5f8e-4b91-9097-9822f3f90207Patch · Vendor Advisory
→
https://community.ui.com/releases/Security-Advisory-Bulletin-023-023/808a1db0-5f8e-4b91-9097-9822f3f90207Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2021-44530
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedJan 14, 2022

Related CVEs (CWE-20)

CVE-2008-0251
10.0
CVE-2008-6826
10.0
CVE-2007-6494
10.0
CVE-2011-0923
10.0
CVE-2007-4915
10.0
CVE-2007-6176
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-44530 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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