CVE-2026-21770

MEDIUM

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

Title source: cna

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.

References (1)

Core 1

Core References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130919

Scores

CVSS v3 6.5

EPSS 0.0011

EPSS Percentile 1.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-427

Status published

Products (1)

HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO) < 3.0.16

Published Jul 17, 2026

Tracked Since Jul 17, 2026