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vulnerability

CVE-2024-55550

2.7
Low
KEV · Exploited in wildEPSS 38%Patch available

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.

exploited
Yes, in CISA KEV since 7 Jan 2025fix by 28 Jan 2025 (CISA deadline for US federal agencies)known use in ransomware campaigns
fix
Patch available see the advisory in the references
likelihood
EPSS 38.2%
Published 10 Dec 2024Analysed here 2 Nov 2026

do firstApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

triage
server-sideruntimeWAF can block: yesAV · networkCWE-22· Path Traversal

Can a WAF block it? Yes. Path traversal sends `../` sequences in the request, which WAF rules catch, including the common encodings.

Also consider: canonical path validation

Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

cvss vector
attack vectornetworkattack complexitylowprivileges requiredhighuser interactionnonescopeunchangedconfidentialitylowintegritynoneavailabilitynone
CVSS 3.1 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
common questions

Is CVE-2024-55550 being exploited?

Yes. CVE-2024-55550 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2024-55550?

CVE-2024-55550 is rated Low with a CVSS score of 2.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2024-55550?

Yes. A fix has been recorded for CVE-2024-55550. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2024-55550 affect?

CVE-2024-55550 affects mitel:micollab. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
mitel:micollab

public exploits

Detection templates only, no public exploit found: 1 Nuclei template

Nuclei

Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.

cisa ssvc

exploitation
active
automatable
yes
technical impact
partial

Assessed by CISA 10 Jan 2025 (SSVC 2.0.3).

timeline

  1. 10 Dec 2024Published
  2. 7 Jan 2025Added to CISA KEV (exploited in the wild) · 27 days later
  3. 10 Jan 2025CISA SSVC assessment: exploitation active · 3 days later
  4. 28 Jan 2025CISA remediation due date (US federal agencies) · 18 days later
  5. 4 Aug 2026CVE record last updated · 553 days (about 2 years) later
  6. 2 Nov 2026Analysed by vulneraibility.com · 91 days (about 3 months) later
how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
3 references in the CVE record: 3 links
  • Linkmitel.com /support/security-advisories
  • Linkmitel.com /support/security-advisories/mitel-product-security-advisory-misa-2024-0029
  • Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55550

sources

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