Answer in brief
CVE-2026-21770 records a Medium severity (CVSS 6.5) vulnerability in HCL Traveler for Microsoft Outlook (HTMO) is susceptible to DLL hijacking. The current sources do not mark it as known exploited. The current feed maps HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO) (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO) (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO)generic | < 3.0.16 | Not reported |
Published upstream
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-21770 records a Medium severity (CVSS 6.5) vulnerability in HCL Traveler for Microsoft Outlook (HTMO) is susceptible to DLL hijacking. The current sources do not mark it as known exploited. The current feed maps HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO) (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO) (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| HCLSoftware/HCL Traveler for Microsoft Outlook (HTMO)generic | < 3.0.16 | Not reported |
Published upstream
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.