CVE-2021-32071

CVE-2021-32071 is a critical-severity vulnerability in Mitel Micollab with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The MiCollab Client service in Mitel MiCollab before 9.3 could allow an unauthenticated user to gain system access due to improper access control. A successful exploit could allow an attacker to view and modify application data, and cause a denial of service for users.

Frequently asked questions

What is CVE-2021-32071?
The MiCollab Client service in Mitel MiCollab before 9.3 could allow an unauthenticated user to gain system access due to improper access control. A successful exploit could allow an attacker to view and modify application data, and cause a denial of service for users.
How severe is CVE-2021-32071?
CVE-2021-32071 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-32071 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32071?
CVE-2021-32071 affects Mitel Micollab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32071?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-32071 published?
CVE-2021-32071 was published on 2021-08-13 and last updated on 2026-06-17.

References

Affected products (1)

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