CVE-2026-21226
Unknown Unknown - Not Provided
Deserialization Vulnerability in Azure Core Python Enables Remote Code Execution

Publication date: 2026-01-13

Last updated on: 2026-02-05

Assigner: Microsoft Corporation

Description
Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.
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Meta Information
Published
2026-01-13
Last Modified
2026-02-05
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21226
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft azure_core_shared_client_library_for_python From 1.1.0 (inc) to 1.38.0 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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Executive Summary

This vulnerability involves deserialization of untrusted data in the Azure Core shared client library for Python, which allows an authorized attacker to execute code remotely over a network. [1]

Impact Analysis

An attacker who is authorized can exploit this vulnerability to execute arbitrary code remotely, potentially leading to full compromise of the affected system or application. [1]

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