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    CVE-2023-37524

    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.

    Published:Jun 27, 2026
    Last Modified:Jun 29, 2026
    EPS:Jun 27, 2026
    EPSS Score:0.00108
    CVSS Score:7.7

    Affected Products

    Vendor
    Hcltech
    Product
    Traveler For Microsoft Outlook

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-21770 (CVSS 6.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a DLL hijacking vulnerability which could allow an…
    CVE-2025-59868 (CVSS 5.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a sensitive data exposure vulnerability which coul…
    CVE-2024-23581 (CVSS 6.7) — The HCL Traveler for Microsoft Outlook libraries are being flagged as potentially malicious software or an unr…
    CVE-2024-42192 (CVSS 5.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a credential leakage which could allow an attacker…
    CVE-2024-42191 (CVSS 6.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a COM hijacking vulnerability which could allow an…
    CVE-2024-42190 (CVSS 6.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a DLL hijacking vulnerability which could allow an…
    CVE-2024-30133 (CVSS 5.3) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a control flow vulnerability. The application doe…
    CVE-2024-30134 (CVSS 6.7) — The HCL Traveler for Microsoft Outlook executable (HTMO.exe) is being flagged as potentially Malicious Softwar…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High