9.1

CVE-2021-45490: 3cx Improper Certificate Validation

CVSS: 9.1v3.1CriticalModified
Published 28-03-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-45490 is a critical (CVSS 9.1) Improper Certificate Validation vulnerability in 3cx. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-03-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

0.00 pp

From 1.09% on 22-09-2026

22-09-202622-10-2026
EPSS score
1.09%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

3cx1 product
  • 3cx≤ 18.0.4 | ≤ 18.0.11 | ≤ 2022-03-17

1 vendor · 1 product

References

2 links