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

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Summary

CVECVE-2026-21770
StatePUBLISHED
AssignerHCL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 05:16:38 UTC
Updated2026-07-17 05:16:38 UTC
DescriptionHCL 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-427 | CWE-427 CWE-427 Uncontrolled Search Path Element

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA HCLSoftware HCL Traveler For Microsoft Outlook HTMO affected < 3.0.16 Not specified

References

ReferenceSourceLinkTags
support.hcl-software.com/csm [email protected] support.hcl-software.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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