CVE-2023-37524

HIGHNVD 7.87.7▼
EchelonGraph scoreHIGH confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-06-27. NVD baseline CVSS 7.8; sources differ by 0.1.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 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
7.7(high)
EPSS
1.4%
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 35× in last 7d / 55× 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.

  1. 2026-07-06 21:46 UTCEG score recompute
  2. 2026-07-06 21:46 UTCGHSA enrichment
  3. 2026-07-06 18:21 UTCNVD updateCVSS v3 → 7.8
  4. 2026-07-06 16:26 UTCEPSS rescore
  5. 2026-07-06 16:26 UTCEPSS rescore
  6. 2026-07-06 09:25 UTCEG score recompute
  7. 2026-07-06 09:25 UTCGHSA enrichment
  8. 2026-07-06 02:21 UTCEPSS rescore
  9. 2026-07-05 21:02 UTCEG score recompute
  10. 2026-07-05 21:02 UTCGHSA enrichment
  11. 2026-07-05 08:41 UTCEG score recompute
  12. 2026-07-05 08:41 UTCGHSA enrichment
  13. 2026-07-05 02:29 UTCEPSS rescore
  14. 2026-07-04 20:20 UTCEG score recompute
  15. 2026-07-04 20:20 UTCGHSA enrichment
  16. 2026-07-04 08:00 UTCEG score recompute
  17. 2026-07-04 07:59 UTCGHSA enrichment
  18. 2026-07-04 06:29 UTCEPSS rescore
  19. 2026-07-03 19:39 UTCEG score recompute
  20. 2026-07-03 19:39 UTCGHSA enrichment
  21. 2026-07-03 07:19 UTCEG score recompute
  22. 2026-07-03 07:18 UTCGHSA enrichment
  23. 2026-07-02 18:57 UTCEG score recompute
  24. 2026-07-02 18:57 UTCGHSA enrichment
  25. 2026-07-02 06:37 UTCEG score recompute
Show 30 more
  1. 2026-07-02 06:37 UTCGHSA enrichment
  2. 2026-07-01 18:17 UTCEG score recompute
  3. 2026-07-01 18:17 UTCGHSA enrichment
  4. 2026-07-01 15:04 UTCEPSS rescore
  5. 2026-07-01 05:55 UTCEG score recompute
  6. 2026-07-01 05:55 UTCGHSA enrichment
  7. 2026-06-30 23:21 UTCEPSS rescore
  8. 2026-06-30 23:21 UTCEPSS rescore
  9. 2026-06-30 17:35 UTCEG score recompute
  10. 2026-06-30 17:35 UTCGHSA enrichment
  11. 2026-06-30 05:15 UTCEG score recompute
  12. 2026-06-30 05:14 UTCGHSA enrichment
  13. 2026-06-29 16:51 UTCEG score recompute
  14. 2026-06-29 16:51 UTCGHSA enrichment
  15. 2026-06-29 14:05 UTCEPSS rescore
  16. 2026-06-29 14:05 UTCEPSS rescore
  17. 2026-06-29 04:30 UTCEG score recompute
  18. 2026-06-29 04:30 UTCGHSA enrichment
  19. 2026-06-28 16:10 UTCEG score recompute
  20. 2026-06-28 16:10 UTCGHSA enrichment
  21. 2026-06-28 14:06 UTCEPSS rescore
  22. 2026-06-28 14:06 UTCEPSS rescore
  23. 2026-06-28 04:55 UTCEPSS rescore
  24. 2026-06-28 04:55 UTCEPSS rescore
  25. 2026-06-28 03:49 UTCEG score recompute
  26. 2026-06-28 03:49 UTCGHSA enrichment
  27. 2026-06-27 15:29 UTCEG score recompute
  28. 2026-06-27 15:29 UTCGHSA enrichment
  29. 2026-06-27 03:08 UTCEG score recompute
  30. 2026-06-27 03:08 UTCNVD updatefirst tracked

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 1.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-37524?
CVE-2023-37524 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.7.
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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