What is CVE-2025-64663?

CVE-2025-64663 is a critical-severity vulnerability in Microsoft Azure Cognitive Service For Language, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2025-12-18.

How severe is CVE-2025-64663?

Critical severity. CVSS v3 base score is 9.9 out of 10.

SSRF in Microsoft Azure Cognitive Service For Language

CVE-2025-64663

Custom Question Answering Elevation of Privilege Vulnerability

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.007 (48.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft Azure Cognitive Service For Language
Microsoft Azure_language

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-64663?: CVE-2025-64663 is a critical-severity vulnerability in Microsoft Azure Cognitive Service For Language, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2025-12-18.
How severe is CVE-2025-64663?: Critical severity. CVSS v3 base score is 9.9 out of 10.