What is CVE-2021-22952?

CVE-2021-22952 is a high-severity vulnerability in Ui Unifi Talk, classified under Code Injection. CVSS score: 8.8/10. Published 2021-09-23.

How severe is CVE-2021-22952?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Ui Unifi Talk

CVE-2021-22952

A vulnerability found in UniFi Talk application V1.12.3 and earlier permits a malicious actor who has already gained access to a network to subsequently control Talk device(s) assigned to said network if they are not yet adopted. This vulnerability is fixed in UniFi Talk application V1.12.5 and later.

Vulnerability class: RCE (Remote Code Execution)

Published 2021-09-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.4th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Ui Unifi Talk
Unifi Talk Application — versions Fixed on 1.12.5

Weakness classification (CWE)

CWE-94 — Code Injection

References

community.ui.com/releases/Security-Advisory-Bulletin-020-020/8ce6a7e6-0cce-4814… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-22952?: CVE-2021-22952 is a high-severity vulnerability in Ui Unifi Talk, classified under Code Injection. CVSS score: 8.8/10. Published 2021-09-23.
How severe is CVE-2021-22952?: High severity. CVSS v3 base score is 8.8 out of 10.