CVE-2023-37524: HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service

Published Jun 27, 2026
·
Updated

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.

Affected Software

3 affected components
HCL Traveler for Microsoft Outlook (HTMO)
.NET .NET Framework 4.5=4.5
hcltech Traveler For Microsoft Outlook<3.0.6

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Configuration

    Replace/upgrade the application’s dependency on .NET Framework 4.5 (which has reached end-of-life and no longer receives security updates) so it no longer relies on the out-of-service framework.

    .NET Framework 4.5 security updates availability (EOL status) = out of service

Event History

Jun 27, 2026
CVE Published
via MITRE·01:19 AM
Data Sourced
via MITRE·01:19 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:16 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2023-37524?

CVE-2023-37524 has a severity rating of high, specifically 7.7 on the CVSS scale.

2

How do I fix CVE-2023-37524?

To mitigate CVE-2023-37524, upgrade to a version of HCL Traveler for Microsoft Outlook that uses a supported version of the .NET Framework.

3

What vulnerabilities does CVE-2023-37524 expose?

CVE-2023-37524 exposes HCL Traveler for Microsoft Outlook to publicly known security weaknesses due to the use of the out-of-service .NET Framework 4.5.

4

Which software is affected by CVE-2023-37524?

CVE-2023-37524 affects HCL Traveler for Microsoft Outlook (HTMO) that relies on the .NET Framework 4.5.

5

Why is .NET Framework 4.5 a concern for CVE-2023-37524?

.NET Framework 4.5 is a concern for CVE-2023-37524 because it has reached end-of-life and no longer receives security updates, increasing the risk of exploitation.

Contact

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