Technology · HCL Software
HCL Software Traveler for Microsoft Outlook vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in HCL Software Traveler for Microsoft Outlook: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-21770, was published on 17 July 2026.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About HCL Software Traveler for Microsoft Outlook
An add-in for Microsoft Outlook that enables synchronization of mail, calendar, and contacts with HCL Domino servers.
Latest HCL Software Traveler for Microsoft Outlook vulnerabilities
Most severe HCL Software Traveler for Microsoft Outlook vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 1 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/traveler-for-microsoft-outlook.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "HCL Software Traveler for Microsoft Outlook vulnerabilities", https://junglewise.ai/threats/technologies/traveler-for-microsoft-outlook, 26 September 2026.