Mitel MiCollab Path Traversal Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-01-07
• Known to be used in ransomware campaigns
• EPSS: 97% chance of exploitation in the next 30 days (higher than 100% of CVEs)
• Critical severity: CVSS 9.1

[ Description ]Official description

A vulnerability in the NuPoint Unified Messaging (NPM) component of Mitel MiCollab through 9.8 SP1 FP2 (9.8.1.201) could allow an unauthenticated attacker to conduct a path traversal attack, due to insufficient input validation. A successful exploit could allow unauthorized access, enabling the attacker to view, corrupt, or delete users' data and system configurations.

CISA: Mitel MiCollab contains a path traversal vulnerability that could allow an attacker to gain unauthorized and unauthenticated access. This vulnerability can be chained with CVE-2024-55550, which allows an unauthenticated, remote attacker to read arbitrary files on the server.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 28 Jan 2025): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.mitel.com/support/security-advisories/mitel-product-security-advisory-misa-2024-0029Vendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource