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    CVE-2026-21226

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

    Published:Jan 13, 2026
    Last Modified:Apr 16, 2026
    EPS:Jan 13, 2026
    EPSS Score:0.01699
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Azure Core Shared Client Library
    Vendor
    Microsoft
    Product
    Azure Core Shared Client Library For Python

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High