CVE-2026-21770

medium Microsoft
CVSS v3 Base Score
6.5
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 98% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: July 17, 2026 (51 days ago)
Last Modified: July 17, 2026
Vendor: Microsoft
Source: MITRE

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.

CWE

CWE-427

Affected Products

HCLSoftware HCL Traveler for Microsoft Outlook (HTMO)

References

🔗 support.hcl-software.com