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CVE-2024-55550: Mitel MiCollab Path Traversal Vulnerability

64
Patch now
LOW 2.7EXPLOITEDUPGRADE

CVE-2024-55550 is a low-severity flaw (CVSS 2.7) affecting micollab, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • EPSS top 1%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Used in ransomware campaigns

A fixed release or distro patch exists.

Risk facts

CVSS score2.7 (Low)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance38.2% (top 1%)
CISA exploited listYes, fix due 2025-01-28, used in ransomware
WeaknessCWE-22
Published2024-12-10
Last modified2026-08-04
Publisher (CNA): MITRE · Vendor: mitel

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Last updated 2026-08-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

mitel micollab UPGRADE
Affected: <= 9.8.1.201
Fixed in: newer than 9.8.1.201
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy micollab || rpm -q micollab || micollab --version
2. UPGRADE to newer than 9.8.1.201 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade micollab
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade micollab
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · byobu · FIXED · 7.23-1.fc46 · FEDORA-2026-08f2b53446 · source
sudo dnf upgrade --advisory=FEDORA-2026-08f2b53446

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-55550?

micollab: upgrade to newer than 9.8.1.201. Exact commands for each OS are on this page.

Is CVE-2024-55550 being exploited?

Yes. CVE-2024-55550 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2024-55550 affect?

CVE-2024-55550 affects micollab. Severity is low (CVSS 2.7). 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 ac

How urgent is CVE-2024-55550?

Priority 64/100. EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns

Related CVEs

References

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