CVE-2026-21226 HIGH

CVE-2026-21226: Azure Core shared client library for Python Remote Code Execution Vulnerability

Vendor Microsoft
Product Azure Core shared client library for Python
Weakness CWE-502 · Unsafe deserialization
Published January 13, 2026
Last update April 1, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

Description

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

Key dates

Disclosure timeline

January 13, 2026 CVE published
April 1, 2026 Record updated