Critical severity · published Mar 28, 2022
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 lack SSL certificate validation
9.1
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
3C
3cx · 3cx
through 18.0.4; through 18.0.11; through 2022-03-17 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45490
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45490
Third Party Advisory
https://packetstormsecurity.com/files/166376/3CX-Client-Missing-TLS-Validation.html
Vendor Advisory
https://www.3cx.com/community/forums/posts-articles-news/
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