Home/CVE/The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through 2022-03-17 l
CVE

CVE-2021-45490

The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through 2022-03-17 l

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.

CRITICAL · CVSS 9.1 EPSS 0.00129
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  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

3
3cx<= 18.0.4
3cx<= 18.0.11
3cx<= 2022-03-17
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · 3CX-Client-Missing-TLS-Validation.htmlpacketstormsecurity.com
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Mar 2022 · 02:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.3cx.com/community/forums/posts-articles-news/Vendor Advisory
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