# CVE-2021-45490: 3CXPhone for Windows: The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through…

CVE-2021-45490 has no fix on record yet for 1 affected product. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2021-45490
- Priority: Urgent
- CVSS: 9.1
- EPSS: 0.0109
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 28, 2022
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-45490

## Description

The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through 2022-03-17 lack SSL certificate validation.

## Where it's fixed

No fix is on record.

## No fix yet

| Platform | Product | Status |
|---|---|---|
| Windows apps | 3CXPhone for Windows | no-fix |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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