What’s Vulnerable › Vulnerabilities
CVE-2023-37524: HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-27 · updated 2026-10-28
- Weakness: CWE-1104
Description
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 products
- HCLSoftware Traveler for Microsoft Outlook: before 3.0.6 — fixed in 3.0.6
How to fix
Upgrade to a fixed version: HCLSoftware Traveler for Microsoft Outlook 3.0.6. Check the vendor advisory for mitigations.
References
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