No exploitation reportedFix available

CVE-2022-36452

Q: Is CVE-2022-36452 actively exploited?

Active exploitation of CVE-2022-36452 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-36452?

CVE-2022-36452 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-10-25
Fixed in9.6
WeaknessCWE-434

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability in the web conferencing component of Mitel MiCollab through 9.5.0.101 could allow an unauthenticated attacker to upload malicious files. A successful exploit could allow an attacker to execute arbitrary code within the context of the application.

Timeline

dates in UTC

2022-10-2519:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-36452?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-36452?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mitel micollab

Branch	Affected	Fixed in	Source
9.6	< 9.6	9.6	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Mitel micollab to 9.6

Advisories and patches

www.mitel.comVendor Advisory
www.mitel.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-05-07
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.19.82025-05-07
NVDCVSS 3.19.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-4342025-05-07
NVDweakness (CWE)CWE-434read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2022-10-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-36452?

Is CVE-2022-36452 actively exploited?

Active exploitation of CVE-2022-36452 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-36452?

CVE-2022-36452 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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