CVE-2024-42191 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to COM hijacking
Attackers can execute arbitrary code by hijacking COM components in HCL Traveler for Microsoft Outlook.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-42191?
CVE-2024-42191 is a medium-severity vulnerability in HCL Traveler for Microsoft Outlook (HTMO), published on 30 May 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a COM hijacking vulnerability which could allow an attacker to modify or replace the application with malicious content.
Weakness: CWE-427
Which versions are affected by CVE-2024-42191?
It affects 1 product.
Products include Hcltech Traveler for Microsoft Outlook.
How do I fix CVE-2024-42191?
No fix has been published for CVE-2024-42191 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-42191 being exploited?
There is no known exploitation of CVE-2024-42191 in the wild and no public exploit code.
Other vulnerabilities in HCL Traveler for Microsoft Outlook (HTMO)
- CVE-2023-37524 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service.
- CVE-2024-23581 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to an application modification vulnerability
- CVE-2024-30134 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to an application modification vulnerability
- CVE-2024-42190 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to DLL hijacking
- CVE-2025-59868 HCL Traveler for Microsoft Outlook (HTMO) is susceptible to sensitive data exposure
Sources
Also known as GHSA-ppq4-7pwf-rg3r.