9.1

CVE-2021-3352: mitel micontact_center_business

Modified
Published 13-08-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-3352 is a critical (CVSS 9.1) vulnerability in mitel micontact_center_business. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 64% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.04%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 13-08-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.04% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Mitel1 product

1 vendor · 1 product

References

2 links