What is CVE-2024-38166?

CVE-2024-38166 is a high-severity vulnerability in Microsoft Dynamics Crm Service Portal Web Resource, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2024-08-06.

How severe is CVE-2024-38166?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2024-38166 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Microsoft Dynamics Crm Service Portal Web Resource

CVE-2024-38166

An unauthenticated attacker can exploit improper neutralization of input during web page generation in Microsoft Dynamics 365 to spoof over a network by tricking a user to click on a link.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (53.4th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38166 (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2024-38166?: CVE-2024-38166 is a high-severity vulnerability in Microsoft Dynamics Crm Service Portal Web Resource, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2024-08-06.
How severe is CVE-2024-38166?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2024-38166 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.