How severe is CVE-2020-10211?

CVE-2020-10211 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-2020-10211 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10211?

CVE-2020-10211 affects Mitel Mivoice Connect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10211?

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-2020-10211 published?

CVE-2020-10211 was published on 2020-04-17 and last updated on 2026-06-17.

CVE-2020-10211

CVE-2020-10211 is a critical-severity vulnerability in Mitel Mivoice Connect 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mitel Mivoice Connect
Published: 2020-04-17
Last modified: 2026-06-17

Description

A remote code execution vulnerability in UCB component of Mitel MiVoice Connect before 19.1 SP1 could allow an unauthenticated remote attacker to execute arbitrary scripts due to insufficient validation of URL parameters. A successful exploit could allow an attacker to gain access to sensitive information.

Frequently asked questions

What is CVE-2020-10211?: A remote code execution vulnerability in UCB component of Mitel MiVoice Connect before 19.1 SP1 could allow an unauthenticated remote attacker to execute arbitrary scripts due to insufficient validation of URL parameters. A successful exploit could allow an attacker to gain access to sensitive information.
How severe is CVE-2020-10211?: CVE-2020-10211 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-2020-10211 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10211?: CVE-2020-10211 affects Mitel Mivoice Connect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10211?: 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-2020-10211 published?: CVE-2020-10211 was published on 2020-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mitel:mivoice_connect:*:*:*:*:*:*:*:*

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