How severe is CVE-2022-36453?

CVE-2022-36453 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-36453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36453?

CVE-2022-36453 affects Mitel Micollab. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-36453?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-36453 published?

CVE-2022-36453 was published on 2022-10-25 and last updated on 2026-06-17.

CVE-2022-36453

CVE-2022-36453 is a high-severity vulnerability in Mitel Micollab with a CVSS 3.x base score of 8.8. 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-285.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Mitel Micollab
Published: 2022-10-25
Last modified: 2026-06-17

Description

A vulnerability in the MiCollab Client API of Mitel MiCollab 9.1.3 through 9.5.0.101 could allow an authenticated attacker to modify their profile parameters due to improper authorization controls. A successful exploit could allow the authenticated attacker to control another extension number.

Frequently asked questions

What is CVE-2022-36453?: A vulnerability in the MiCollab Client API of Mitel MiCollab 9.1.3 through 9.5.0.101 could allow an authenticated attacker to modify their profile parameters due to improper authorization controls. A successful exploit could allow the authenticated attacker to control another extension number.
How severe is CVE-2022-36453?: CVE-2022-36453 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-36453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36453?: CVE-2022-36453 affects Mitel Micollab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-36453?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-36453 published?: CVE-2022-36453 was published on 2022-10-25 and last updated on 2026-06-17.

References

Affected products (1)

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

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Other CWE-285 (Improper Authorization) vulnerabilities

CVE-2025-65041 — Critical (CVSS 10.0): Improper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.
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CVE-2022-2595 — Critical (CVSS 10.0): Improper Authorization in GitHub repository kromitgmbh/titra prior to 0.79.1.
CVE-2021-28799 — Critical (CVSS 10.0): An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If…
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CVE-2026-5412 — Critical (CVSS 9.9): In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated…

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