Security readout for executives and security teams
Plain-English summary
Mitel MiCollab through 9.8 SP2 contains a path traversal weakness that can expose local files to an already-authenticated administrator. The disclosed impact is limited to non-sensitive system information; it does not enable file changes or privilege escalation. CISA’s KEV listing raises urgency because exploitation has been observed.
Executive priority
Prioritize remediation promptly because CISA reports known exploitation, while recognizing that exploitation requires privileged administrative access and disclosed impact is limited. Treat exposed or weakly controlled management access as the highest-priority condition. Confirm Mitel’s remediation guidance rather than assuming a corrected release.
Technical view
Insufficient input sanitization permits a high-privileged authenticated attacker to perform a local file read. The issue is classified as CWE-22 and scored CVSS 3.1 4.4 (AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N). The supplied description limits disclosure to non-sensitive system information and states that integrity, availability, and privileges are unaffected.
Likely exposure
Exposure is limited to Mitel MiCollab versions through 9.8 SP2, based on the supplied record. Successful exploitation requires administrative privileges and local attack conditions under the CVSS vector. Risk is greatest where administrator credentials or privileged sessions are compromised. The bundle does not identify the first corrected version.
Exploitation context
CISA KEV inclusion supports that this vulnerability has been exploited in the wild. The bundle provides no campaign details, prevalence, exploit method, or attribution. The high privilege and local-access requirements materially constrain exploitation, but compromised administrator access could satisfy those prerequisites.
Researcher notes
The record presents an important nuance: its CVSS vector assigns high confidentiality impact, while the narrative limits disclosure to non-sensitive system information. It also describes local attack conditions and high privileges. No evidence in the bundle establishes remote unauthenticated exploitation, file modification, privilege escalation, affected components, or a corrected version.
Mitigation direction
- Inventory MiCollab deployments and identify systems running 9.8 SP2 or earlier.
- Review MISA-2024-0029 and apply Mitel’s specified update or mitigation.
- Restrict administrative access to trusted management networks and authorized personnel.
- Rotate or disable unnecessary administrator credentials and strengthen privileged-access monitoring.
Validation and detection
- Confirm each MiCollab version using trusted asset or administrative records.
- Verify remediation status against Mitel advisory MISA-2024-0029.
- Review administrator authentication and activity logs for unexpected access.
- Confirm administrative interfaces are restricted to approved management paths.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-55550 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N0.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2024-55550 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2025-01-07T00:00:00.000Z: CVE-2024-55550 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mitel.com/support/security-advisoriesCVE reference, mitre
- https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-misa-2024-0029CVE reference, mitre
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55550CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.