CVE-2024-42190: HCL Traveler for Microsoft Outlook (HTMO) · Uncontrolled Search Path Element
Affects HCL Traveler for Microsoft Outlook (HTMO)Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.0.12 when convenient.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.0.12
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade HCL Traveler for Microsoft Outlook (HTMO) to 3.0.12.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| HCL Software HCL Traveler for Microsoft Outlook (HTMO) | Affected
| Fixed in
|
AI-suggested
European organizations should prioritize upgrading HCL Traveler for Microsoft Outlook to version 3.0.12 or later once available to ensure the vulnerability is patched. If you cannot patch yet, organizations should implement strict application whitelisting and restrict write permissions on directories used by HTMO to load DLLs, preventing unauthorized DLL placement. Employing endpoint detection and response (EDR) solutions to monitor for suspicious DLL loading behavior can help detect exploitation attempts. Additionally, enforcing the principle of least privilege to limit user rights can reduce the risk of exploitation, as the vulnerability requires high privileges. User awareness training to recognize and avoid social engineering tactics that might trigger the required user interaction is also recommended. Network segmentation to isolate systems running HTMO can limit lateral movement if exploitation occurs. Finally, organizations should monitor vendor advisories closely for patch releases and apply them promptly.
Description
HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a DLL hijacking vulnerability which could allow an attacker to modify or replace the application with malicious content.