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CVE-2024-55550 CISA KEV — actively exploited Ransomware-linked

Mitel MiCollab Path Traversal Vulnerability

n/a — n/a

Mitel MiCollab through 9.8 SP2 could allow an authenticated attacker with administrative privilege to conduct a local file read, due to insufficient input sanitization. A successful exploit could allow the authenticated admin attacker to access resources that are constrained to the admin access level, and the disclosure is limited to non-sensitive system information. This vulnerability does not allow file modification or privilege escalation.

CVSS scoreMedium

4.4

EPSS — exploitation probabilityMedium

38.1%

Vector breakdown

Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Published
Dec 10, 2024
Modified
Oct 21, 2025
Added to KEV
Jan 7, 2025
Federal patch due
Jan 28, 2025

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory

Proof-of-concept & exploitation references

Weaponization

Nuclei template

Available

Metasploit module

Not found

Public repositories whose name or description references CVE-2024-55550, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.

No public GitHub repositories referencing CVE-2024-55550 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.

References

  • mitel.com
  • mitel.com

Frequently asked questions

What is CVE-2024-55550?

Mitel MiCollab through 9.8 SP2 could allow an authenticated attacker with administrative privilege to conduct a local file read, due to insufficient input sanitization. A successful exploit could allow the authenticated admin attacker to access resources that are constrained to the admin access level, and the disclosure is limited to non-sensitive system information. This vulnerability does not allow file modification or privilege escalation.

How severe is CVE-2024-55550?

CVE-2024-55550 has a CVSS base score of 4.4 out of 10 (CVSS 3.1).

Is CVE-2024-55550 actively exploited in the wild?

Yes. CVE-2024-55550 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jan 7, 2025, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.

What is the EPSS score for CVE-2024-55550?

38.1% - meaning FIRST.org's EPSS model estimates a 38.1% probability this vulnerability will be exploited in the wild within 30 days (98% percentile among all scored CVEs).

Is there exploit tooling available for CVE-2024-55550?

Yes - a public Nuclei template referencing CVE-2024-55550 exist in public repositories we checked.

What type of vulnerability is CVE-2024-55550?

CVE-2024-55550 is classified under CWE-22 (CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')).

Cross-checked against

  • NVD (NIST)
  • MITRE CVE Record
  • CISA KEV
  • FIRST.org EPSS
  • GitHub Advisory Database
  • GitHub public repository search

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