CVE-2023-37524

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service.  Since .NET Framework 4.5 has reached end-of-life and no longer receives security updates, it may expose the application to publicly known security weaknesses through vulnerable third-party components.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

June 27, 2026

Last Modified

July 6, 2026

Advisory Details (1)

Auto-updated Jun 27, 2026
No patch confirmed yet.
generic

Security Bulletin: Multiple vulnerabilities in Microsoft .NET Framework 4.5 affect HCL Traveler for Microsoft Outlook - Customer Support

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131418

Vendor Advisories for CVE-2023-37524(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 101× 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 181 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2023-37524?
CVE-2023-37524 is a high vulnerability published on June 27, 2026. HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service. Since .NET Framework 4.5 has reached end-of-life and no longer receives security updates, it may expose the application to publicly known security weaknesses through…
When was CVE-2023-37524 disclosed?
CVE-2023-37524 was first published in the National Vulnerability Database on June 27, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-37524 actively exploited?
CVE-2023-37524 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.9% of all scored CVEs.
What is the CVSS score of CVE-2023-37524?
CVE-2023-37524 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-37524?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-37524, 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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