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Vulnerability record · CVE-2021-3352 · published 13 August 2021

CVE-2021-3352: Mitel micontact center business vulnerability

Mitel · Micontact Center Business

The Software Development Kit in Mitel MiContact Center Business from 8.0.0.0 through 8.1.4.1 and 9.0.0.0 through 9.3.1.0 could allow an unauthenticated attacker to access (view and modify) user data without authorization due to improper handling of tokens.

9.1 CVSS 3.1 Critical EPSS 1.0% · top 37.4%
9.1CVSS 3.1 base score, v2 6.4
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

The Software Development Kit in Mitel MiContact Center Business from 8.0.0.0 through 8.1.4.1 and 9.0.0.0 through 9.3.1.0 could allow an unauthenticated attacker to access (view and modify) user data without authorization due to improper handling of tokens.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.mitel.com/support/security-advisories Vendor Advisory
https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-21-0002 Vendor Advisory
https://www.mitel.com/support/security-advisories Vendor Advisory
https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-21-0002 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.2CVE-2025-67823Mitel cx cross-site scripting vulnerabilityA vulnerability in the Multimedia Email component of Mitel MiContact Center Business through 10.2.0.10 and Mitel CX through 1.1.0.1 could allow an un…EPSS 0.34%8.1CVE-2024-42514Mitel micontact center business improper access control vulnerabilityA vulnerability in the legacy chat component of Mitel MiContact Center Business through 10.1.0.4 could allow an unauthenticated attacker to conduct a…EPSS 0.45%7.5CVE-2024-28069Mitel micontact center business vulnerabilityA vulnerability in the legacy chat component of Mitel MiContact Center Business through 10.0.0.4 could allow an unauthenticated attacker to conduct a…EPSS 0.57%7.5CVE-2023-22854Mitel micontact center business vulnerabilityThe ccmweb component of Mitel MiContact Center Business server 9.2.2.0 through 9.4.1.0 could allow an unauthenticated attacker to download arbitrary …EPSS 0.60%7.1CVE-2020-24692Mitel micontact center business improper input validation vulnerabilityThe Ignite portal in Mitel MiContact Center Business before 9.3.0.0 could allow an attacker to execute arbitrary scripts due to insufficient input va…EPSS 0.42%6.8CVE-2024-28070Mitel micontact center business cross-site scripting vulnerabilityA vulnerability in the legacy chat component of Mitel MiContact Center Business through 10.0.0.4 could allow an unauthenticated attacker to conduct a…EPSS 0.45%6.5CVE-2020-9379Mitel micontact center business vulnerabilityThe Software Development Kit of the MiContact Center Business with Site Based Security 8.0 through 9.0.1.0 before KB496276 allows an authenticated us…EPSS 0.92%6.1CVE-2024-35283Mitel micontact center business cross-site scripting vulnerabilityA vulnerability in the Ignite component of Mitel MiContact Center Business through 10.0.0.4 could allow an unauthenticated attacker to conduct a stor…EPSS 0.26%

Source: NIST National Vulnerability Database (record CVE-2021-3352), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.