CVE-2026-21531
critical
Microsoft CVSS v3 Base Score
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS Score
0.3%
Exploitation probability in 30 days
Top 43% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: February 10, 2026 (93 days ago)
Last Modified: March 13, 2026
Vendor: Microsoft
Source: MITRE
Vulnerability Report
Generated by CyberWatcher
Description
Deserialization of untrusted data in Azure SDK allows an unauthorized attacker to execute code over a network.
CWE
CWE-502Affected Products
Microsoft Azure AI Language Authoring