How severe is CVE-2020-25611?

CVE-2020-25611 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-25611 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25611?

CVE-2020-25611 affects Mitel Micollab. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25611?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-25611 published?

CVE-2020-25611 was published on 2020-12-18 and last updated on 2026-06-17.

CVE-2020-25611

CVE-2020-25611 is a medium-severity vulnerability in Mitel Micollab with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mitel Micollab
Published: 2020-12-18
Last modified: 2026-06-17

Description

The AWV portal of Mitel MiCollab before 9.2 could allow an attacker to gain access to conference information by sending arbitrary code due to improper input validation, aka XSS. Successful exploitation could allow an attacker to view user conference information.

Frequently asked questions

What is CVE-2020-25611?: The AWV portal of Mitel MiCollab before 9.2 could allow an attacker to gain access to conference information by sending arbitrary code due to improper input validation, aka XSS. Successful exploitation could allow an attacker to view user conference information.
How severe is CVE-2020-25611?: CVE-2020-25611 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-25611 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25611?: CVE-2020-25611 affects Mitel Micollab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25611?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25611 published?: CVE-2020-25611 was published on 2020-12-18 and last updated on 2026-06-17.

References

https://www.mitel.com/support/security-advisories

Affected products (1)

cpe:2.3:a:mitel:micollab:*:*:*:*:*:-:*:*

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