# CVE-2024-23581: HCL Traveler for Microsoft Outlook use of unmaintained components

Source: https://junglewise.ai/threats/cve-2024-23581-hcl-traveler-for-microsoft-outlook-use-of-unmaintained-components  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-26. Updated: 2026-06-26  
License: CC BY 4.0 with a link back

CVE-2024-23581 · Severity: medium · CVSS 6.7 · Published 2026-06-26

HCL Traveler for Microsoft Outlook, a tool that allows users to access HCL Domino mail and calendar data through the Outlook client, contains a security vulnerability due to the use of outdated third-party components. These components are being flagged as malicious or unrecognized by security software, which could allow an attacker with local access to compromise the integrity and confidentiality of the application's data. Organizations should update to the latest version to ensure the software remains trusted and secure.

Technologies: [HCL Software Traveler for Microsoft Outlook](https://junglewise.ai/threats/technologies/traveler-for-microsoft-outlook). Vendors: [HCL Software](https://junglewise.ai/threats/vendors/hcl-software).

## Quick answers

**Is CVE-2024-23581 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-23581 being exploited in the wild.

**How severe is CVE-2024-23581?** Medium severity, with a CVSS score of 6.7, published 26 June 2026.

**Which products and versions are affected?** HCL Software Traveler for Microsoft Outlook < 3.0.9.

**Is there a fix for CVE-2024-23581?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2024-23581 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2024-23581?** Check whether you run HCL Software Traveler for Microsoft Outlook at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

HCL Traveler for Microsoft Outlook (HTMO) versions prior to 3.0.9 are vulnerable to CWE-1104 (Use of Unmaintained Third Party Components). The vulnerability manifests as libraries being flagged as potentially malicious or unrecognized by security scanners, indicating a risk of application modification. An attacker with local access and low privileges could potentially exploit these unmaintained components to impact the confidentiality, integrity, and availability of the system, though the attack requires high complexity and user interaction. The issue is resolved in HTMO version 3.0.9.

## Affected products

- HCL Software Traveler for Microsoft Outlook (HTMO) < 3.0.9

## Timeline

- 2026-06-26: advisory: NVD and HCL Software published the advisory.

## References

- [https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131417](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131417)

## Related threats

- [HCL Traveler for Microsoft Outlook DLL hijacking](https://junglewise.ai/threats/cve-2026-21770-hcl-traveler-for-microsoft-outlook-dll-hijacking)
- [HCL Traveler for Microsoft Outlook use of unmaintained .NET Framework 4.5](https://junglewise.ai/threats/cve-2023-37524-hcl-traveler-for-microsoft-outlook-use-of-unmaintained-net)