CVE-2024-55550

CRITICALNVD 2.79.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-01-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 2.7 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 38%CVSS: 2.7Exploit: cisa kev · ssvc active · kev ransomware · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
2.7
EG Score
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
38%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

December 10, 2024

Last Modified

August 4, 2026

References (3)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 60× in last 7d / 251× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 933 total refreshes for this CVE.

  1. 2026-09-22 14:47 UTCEPSS rescore
  2. 2026-09-22 14:29 UTCGHSA enrichment
  3. 2026-09-22 10:29 UTCGHSA enrichment
  4. 2026-09-22 06:30 UTCGHSA enrichment
  5. 2026-09-22 02:31 UTCGHSA enrichment
  6. 2026-09-21 22:32 UTCEG score recompute
  7. 2026-09-21 22:32 UTCGHSA enrichment
  8. 2026-09-21 19:09 UTCCISA KEV update
  9. 2026-09-21 18:33 UTCGHSA enrichment
  10. 2026-09-21 14:34 UTCGHSA enrichment
  11. 2026-09-21 10:35 UTCGHSA enrichment
  12. 2026-09-21 06:35 UTCGHSA enrichment
  13. 2026-09-21 02:36 UTCGHSA enrichment
  14. 2026-09-20 22:37 UTCEG score recompute
  15. 2026-09-20 22:37 UTCGHSA enrichment
  16. 2026-09-20 20:14 UTCEPSS rescore
  17. 2026-09-20 20:14 UTCEPSS rescore
  18. 2026-09-20 18:38 UTCGHSA enrichment
  19. 2026-09-20 14:38 UTCGHSA enrichment
  20. 2026-09-20 10:37 UTCGHSA enrichment
  21. 2026-09-20 06:38 UTCGHSA enrichment
  22. 2026-09-20 02:36 UTCGHSA enrichment
  23. 2026-09-19 22:37 UTCGHSA enrichment
  24. 2026-09-19 18:37 UTCEG score recompute
  25. 2026-09-19 18:37 UTCGHSA enrichment
Show 75 more
  1. 2026-09-19 14:38 UTCGHSA enrichment
  2. 2026-09-19 10:39 UTCGHSA enrichment
  3. 2026-09-19 06:38 UTCGHSA enrichment
  4. 2026-09-19 02:40 UTCGHSA enrichment
  5. 2026-09-18 22:41 UTCEG score recompute
  6. 2026-09-18 22:41 UTCGHSA enrichment
  7. 2026-09-18 19:26 UTCEPSS rescore
  8. 2026-09-18 19:20 UTCCISA KEV update
  9. 2026-09-18 18:42 UTCGHSA enrichment
  10. 2026-09-18 14:43 UTCGHSA enrichment
  11. 2026-09-18 14:15 UTCCISA KEV update
  12. 2026-09-18 10:44 UTCGHSA enrichment
  13. 2026-09-18 06:45 UTCGHSA enrichment
  14. 2026-09-18 02:46 UTCGHSA enrichment
  15. 2026-09-17 22:46 UTCEG score recompute
  16. 2026-09-17 22:46 UTCGHSA enrichment
  17. 2026-09-17 18:45 UTCGHSA enrichment
  18. 2026-09-17 14:47 UTCGHSA enrichment
  19. 2026-09-17 10:48 UTCGHSA enrichment
  20. 2026-09-17 06:49 UTCGHSA enrichment
  21. 2026-09-17 02:49 UTCGHSA enrichment
  22. 2026-09-16 22:49 UTCGHSA enrichment
  23. 2026-09-16 18:49 UTCGHSA enrichment
  24. 2026-09-16 14:50 UTCEG score recompute
  25. 2026-09-16 14:50 UTCGHSA enrichment
  26. 2026-09-16 14:10 UTCCISA KEV update
  27. 2026-09-16 14:06 UTCEPSS rescore
  28. 2026-09-16 14:06 UTCEPSS rescore
  29. 2026-09-16 10:51 UTCGHSA enrichment
  30. 2026-09-16 06:52 UTCEG score recompute
  31. 2026-09-16 06:52 UTCGHSA enrichment
  32. 2026-09-16 05:12 UTCEPSS rescore
  33. 2026-09-16 02:53 UTCGHSA enrichment
  34. 2026-09-15 22:54 UTCGHSA enrichment
  35. 2026-09-15 18:55 UTCGHSA enrichment
  36. 2026-09-15 14:56 UTCGHSA enrichment
  37. 2026-09-15 10:56 UTCGHSA enrichment
  38. 2026-09-15 06:58 UTCEG score recompute
  39. 2026-09-15 06:58 UTCGHSA enrichment
  40. 2026-09-15 03:08 UTCEPSS rescore
  41. 2026-09-15 02:59 UTCGHSA enrichment
  42. 2026-09-14 23:00 UTCGHSA enrichment
  43. 2026-09-14 19:24 UTCCISA KEV update
  44. 2026-09-14 19:01 UTCGHSA enrichment
  45. 2026-09-14 15:02 UTCGHSA enrichment
  46. 2026-09-14 11:03 UTCGHSA enrichment
  47. 2026-09-14 07:03 UTCGHSA enrichment
  48. 2026-09-14 03:04 UTCGHSA enrichment
  49. 2026-09-13 23:05 UTCGHSA enrichment
  50. 2026-09-13 19:06 UTCGHSA enrichment
  51. 2026-09-13 15:07 UTCGHSA enrichment
  52. 2026-09-13 11:08 UTCGHSA enrichment
  53. 2026-09-13 07:08 UTCGHSA enrichment
  54. 2026-09-13 03:10 UTCGHSA enrichment
  55. 2026-09-12 23:11 UTCGHSA enrichment
  56. 2026-09-12 19:12 UTCGHSA enrichment
  57. 2026-09-12 15:13 UTCEG score recompute
  58. 2026-09-12 15:13 UTCGHSA enrichment
  59. 2026-09-12 14:59 UTCEPSS rescore
  60. 2026-09-12 11:14 UTCGHSA enrichment
  61. 2026-09-12 07:15 UTCGHSA enrichment
  62. 2026-09-12 03:16 UTCGHSA enrichment
  63. 2026-09-11 23:17 UTCGHSA enrichment
  64. 2026-09-11 19:18 UTCGHSA enrichment
  65. 2026-09-11 18:49 UTCCISA KEV update
  66. 2026-09-11 15:19 UTCEG score recompute
  67. 2026-09-11 15:19 UTCGHSA enrichment
  68. 2026-09-11 14:51 UTCEPSS rescore
  69. 2026-09-11 11:20 UTCEG score recompute
  70. 2026-09-11 11:20 UTCGHSA enrichment
  71. 2026-09-11 09:35 UTCEPSS rescore
  72. 2026-09-11 07:19 UTCGHSA enrichment
  73. 2026-09-11 03:20 UTCGHSA enrichment
  74. 2026-09-10 23:21 UTCGHSA enrichment
  75. 2026-09-10 19:28 UTCCISA KEV update

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2024/CVE-2024-55550.yaml
    First seen Jan 1, 2024

    Mitel MiCollab - Arbitary File Read

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2024-55550?
CVE-2024-55550 is a critical vulnerability published on December 10, 2024. 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…
When was CVE-2024-55550 disclosed?
CVE-2024-55550 was first published in the National Vulnerability Database on December 10, 2024, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-55550 actively exploited?
Yes. CISA added CVE-2024-55550 to the Known Exploited Vulnerabilities catalog on January 7, 2025, affecting Mitel MiCollab. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2024-55550?
CVE-2024-55550 has a CVSS v3 base score of 2.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2024-55550?
CVE-2024-55550 affects Mitel MiCollab. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2024-55550?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-55550, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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