What is CVE-2025-64675?

CVE-2025-64675 is a high-severity vulnerability in Microsoft Azure Cosmos Db, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2025-12-19.

How severe is CVE-2025-64675?

High severity. CVSS v3 base score is 8.3 out of 10.

XSS in Microsoft Azure Cosmos Db

CVE-2025-64675

Improper neutralization of input during web page generation ('cross-site scripting') in Azure Cosmos DB allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-12-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.007 (53.6th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% 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

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64675 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-64675?: CVE-2025-64675 is a high-severity vulnerability in Microsoft Azure Cosmos Db, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2025-12-19.
How severe is CVE-2025-64675?: High severity. CVSS v3 base score is 8.3 out of 10.