HCL Traveler for Microsoft Outlook (HTMO) is susceptible to COM hijacking

published 2025-05-30 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-54613

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

hcltech traveler_for_microsoft_outlook 3.0.12

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 17 mo ago (2025-05-30)

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

HCL Software HCL Traveler for Microsoft Outlook (HTMO)

Classification

Weakness

CWE-427 Uncontrolled Search Path Element

References

support.hcl-software.com /csm?id=kb_article&sysparm_article=KB0120745
vendor-advisory

Sources

CVE List CVE-2024-42191
NVD CVE-2024-42191

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Summary