CVE-2026-21770
MEDIUMCVSS 6.5/10EPSS 0.11%
Last modified
CVE-2026-21770 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| HCLSoftware | HCL Traveler for Microsoft Outlook (HTMO) | < 3.0.16 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-21770?
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.
How severe is CVE-2026-21770?
CVE-2026-21770 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.
How do I fix CVE-2026-21770?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-21764HCL DevOps Loop is affected by insufficient input validation…3.1
- CVE-2026-21765HCL BigFix Platform is affected by insecure permissions on p…7.8
- CVE-2026-21766The default login portlet in HCL Digital Experience and Digi…5.4
- CVE-2026-21767HCL BigFix Platform is affected by insufficient authenticati…3.3
- CVE-2026-21768The compose-rich-editor library (v1.0.0-rc14) used in HCL Ve…6.3
- CVE-2026-2177A vulnerability has been found in SourceCodester Prison Mana…7.3
- CVE-2026-2178A vulnerability was found in r-huijts xcode-mcp-server up to…8.8
- CVE-2026-21783HCL Traveler is affected by sensitive information disclosure…4.3
- CVE-2026-21785A misconfigured Content Security Policy (CSP) in HCL BigFix …4
- CVE-2026-21786HCL Sametime for iOS is impacted by a sensitive information …3.3
- CVE-2026-21788HCL Connections is vulnerable to a cross-site scripting atta…5.4
- CVE-2026-21789HCL Connections contains a broken access control vulnerabili…4.6
Are you affected by CVE-2026-21770?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST