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Vulnerability record · CVE-2021-22943 · published 31 August 2021

CVE-2021-22943: Ui unifi protect improper authentication vulnerability

Ui · Unifi Protect

A vulnerability found in UniFi Protect application V1.18.1 and earlier permits a malicious actor who has already gained access to a network to subsequently control the Protect camera(s) assigned to said network. This vulnerability is fixed in UniFi Protect application V1.19.0 and later.

9.6 CVSS 3.1 Critical EPSS 0.41% · top 67.3% CWE-287 · Improper authentication
9.6CVSS 3.1 base score, v2 8.3
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability found in UniFi Protect application V1.18.1 and earlier permits a malicious actor who has already gained access to a network to subsequently control the Protect camera(s) assigned to said network. This vulnerability is fixed in UniFi Protect application V1.19.0 and later.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://community.ui.com/releases/Security-Advisory-Bulletin-019-019/90a00abe-d6b6-43c6-92d4-0a0342f1506f Vendor Advisory
https://community.ui.com/releases/Security-Advisory-Bulletin-019-019/90a00abe-d6b6-43c6-92d4-0a0342f1506f Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-55115Ui unifi protect server-side request forgery (ssrf) vulnerabilityA malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) in UniFi Protect Application to es…EPSS 0.47%9.8CVE-2026-54408Ui unifi protect improper access control vulnerabilityA malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi Protect Application to bypass auth…EPSS 0.57%8.8CVE-2026-56841Ui unifi protect sql injection vulnerabilityA malicious actor with access to the network and low privileges could exploit an authenticated SQL Injection vulnerability found in UniFi Protect App…EPSS 0.49%8.8CVE-2026-21633Ui unifi protect improper authentication vulnerabilityA malicious actor with access to the adjacent network could obtain unauthorized access to a UniFi Protect Camera by exploiting a discovery protocol v…EPSS 0.45%8.8CVE-2021-22957Ui unifi protect vulnerabilityA Cross-Origin Resource Sharing (CORS) vulnerability found in UniFi Protect application Version 1.19.2 and earlier allows a malicious actor who has c…EPSS 0.91%8.6CVE-2026-54407Ui unifi protect improper access control vulnerabilityA malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi Protect Application to bypass auth…EPSS 0.45%8.1CVE-2026-54409Ui unifi protect vulnerabilityA malicious actor with access to the network and under certain conditions could exploit an Improper Initialization vulnerability found in UniFi Prote…EPSS 0.44%8.0CVE-2021-22944Ui unifi protect vulnerabilityA vulnerability found in UniFi Protect application V1.18.1 and earlier allows a malicious actor with a view-only role and network access to gain the …EPSS 0.42%

Source: NIST National Vulnerability Database (record CVE-2021-22943), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.