CVE-2024-55550
Mitel MiCollab Path Traversal Vulnerability
Mitel MiCollab
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 7 January 2025. US federal agencies were required to remediate it by 28 January 2025. CISA records this vulnerability as known to be used in ransomware campaigns.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 38.2%, which is higher than 98.5% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Frequently asked questions
Is CVE-2024-55550 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2024-55550.
What does CVE-2024-55550 affect?
CVE-2024-55550 affects Mitel MiCollab. 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 is rated LOW with a CVSS base score of 2.7. EPSS puts the probability of exploitation in the next 30 days at 38.2%, higher than 98.5% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 28 January 2025.
How should organisations respond to CVE-2024-55550?
Apply the vendor patch for Mitel MiCollab as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.