Vulnerability · Published Jul 17, 2026 · Assigned by HCL
CVE-2026-21770HCL Traveler for Microsoft Outlook (HTMO) is susceptible to DLL hijacking
Medium 6.5
In plain English
A medium-severity uncontrolled search path in HCL Traveler for Microsoft Outlook (HTMO) from HCLSoftware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 94.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HCLSoftware | HCL Traveler for Microsoft Outlook (HTMO) | < 3.0.16 |
Weakness: CWE-427 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H