Security Digest · Vulnerability record · Known exploited
CVE-2024-55550: Mitel MiCollab Path Traversal Vulnerability
Exploited in the wild (CISA KEV). 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.
CISA KEV · added 2025-01-07 CVSS 4.4 Medium EPSS 38.2% · p99
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run Mitel MiCollab. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-01-07, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-01-28; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns.
- EPSS 38.2%, percentile 99: FIRST’s model estimates a 38.2% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
What it is
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.
CISA’s summary
Mitel MiCollab contains a path traversal vulnerability that could allow an authenticated attacker with administrative privileges to read local files within the system due to insufficient input sanitization. This vulnerability can be chained with CVE-2024-41713, which allows an unauthenticated, remote attacker to read arbitrary files on the server.
Weakness type: CWE-22.
Product: Mitel MiCollab · Assigned by: mitre · Published: 2024-12-10
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| n/a | n/a | see vendor advisory |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 4.4 Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
- Attack vector: local access needed
- Attack complexity: low
- Privileges required: high (admin)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2025-01-07; federal due date 2025-01-28. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable yes, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 38.16% probability of exploitation activity in the next 30 days; percentile 99.
Timeline
- — CVE record published by mitre
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (mitel.com) mitel.com
Vulnerability records
- CVE.org record CVE-2024-55550 cve.org
- NVD entry CVE-2024-55550 nvd.nist.gov
Government
Other references from the CVE record and advisory
- mitel.com mitel.com
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