CVE-2024-55550
MEDIUMCVE-2024-55550 is a medium-severity (CVSS 4.4) Path Traversal vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2025-01-07) and has been used in ransomware campaigns — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.
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…
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2025-01-07 — including use in ransomware campaigns. Federal agencies were required to remediate by 2025-01-28.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2024-55550.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2024-55550 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.
Description
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.
Affected Products
micollabmitelDetection & mitigation playbook
VulnerabilityDetect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Remediation status
No fixed release is recorded for CVE-2024-55550 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.
Mitigate without a patch
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
How to detect CVE-2024-55550
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2024-55550 -u https://target- Template
- Mitel MiCollab - Arbitary File Read
- Severity
- critical
- Impact
- Unauthenticated attackers can bypass authentication and exploit path traversal to read arbitrary files from the MiCollab server, exposing sensitive configuration, credentials, and system data.
- Remediation
- Update Mitel MiCollab according to MISA-2024-0029 advisory to address the authentication bypass and path traversal vulnerabilities.
Template by ProjectDiscovery nuclei-templates (DhiyaneshDk, watchTowr), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2024-55550 in your dependencies?
Find it across , including transitive dependencies.