CVE-2026-21226

high Microsoft
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.5%
Exploitation probability in 30 days
Top 19% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: January 13, 2026 (121 days ago)
Last Modified: February 5, 2026
Vendor: Microsoft

Description

Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.

CWE

CWE-502

Affected Products

microsoft azure core shared client library

References

🔗 msrc.microsoft.com