CVE•Published 2026-06-27•Modified 2026-07-06•0 articles on news•4 live references•NVD data

CVE-2023-37524Hcltech · Traveler_for_microsoft_outlook

Vulnerability data via NVD (ingested)

CVSS v3.1

7.7

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 99% of all CVEs

Weaknesses (CWE)

CWE-1104Use of Unmaintained Third Party Components

Description

HCL Traveler for Microsoft Outlook (HTMO) is susceptible to vulnerabilities due to .NET Framework 4.5 being out of service. Since .NET Framework 4.5 has reached end-of-life and no longer receives security updates, it may expose the application to publicly known security weaknesses through vulnerable third-party components.

Timeline

Published 2026-06-27

Modified 2026-07-06

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2023-37524

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Hcltech Traveler For Microsoft Outlook"

All exposed Hcltech Traveler For Microsoft Outlook instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Traveler For Microsoft Outlook"

HTTP body or banner mentions "Traveler For Microsoft Outlook" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2023-37524