Background exploitation KEV catalog Ransomware
CVE-2024-55550

Mitel MiCollab Path Traversal Vulnerability

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…

CheckOps priority index
5.3/10 Patch within 7 days
Severity4.4
Probability3.8
Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 38.2% higher than 98.6% of CVEs
CVSS 3.1 4.4 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:
Exploited for 665 days 07 Jan 2025
CISA due date 28 Jan 2025 for US federal agencies

Exploitation probability EPSS · FIRST

05010025 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

  • KEV catalog (CISA)07 Jan 2025
  • Exploited in EUVD (ENISA)07 Jan 2025
  • Used by ransomwareyes
  • EPSS above 10 %38.2%
  • No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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

MiCollab
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

  5. EPSS peak: 38.2%

References

Other exploited vulnerabilities from the same vendor

  • CVE-2024-41710Mitel SIP Phones Argument Injection Vulnerability
    5.8 · Background exploitation
  • CVE-2024-41713Mitel MiCollab Path Traversal Vulnerability
    9.6 · Background exploitation
  • CVE-2022-41223Mitel MiVoice Connect Code Injection Vulnerability
    5.4 · Background exploitation
  • CVE-2022-40765Mitel MiVoice Connect Command Injection Vulnerability
    5.4 · Background exploitation
  • CVE-2022-29499Mitel MiVoice Connect Data Validation Vulnerability
    8.6 · Background exploitation
  • CVE-2022-26143MiCollab, MiVoice Business Express Access Control Vulnerability
    8.9 · Background exploitation

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities