CVE-2026-21770

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

Published Jul 17, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Hcltech
Hcltech traveler For Microsoft Outlook
Vendors & Products Hcltech
Hcltech traveler For Microsoft Outlook
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title HCL Traveler for Microsoft Outlook (HTMO) is susceptible to DLL hijacking
Weaknesses CWE-427
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
HCL
Published
Updated
Jul 17, 2026, 1:04 PM
Reserved
Jan 5, 2026, 4:07 PM
Status
Deferred
Published
Jul 17, 2026, 5:16 AM
Modified
Oct 24, 2026, 8:10 PM