CVE-2026-21226

Azure Core shared client library for Python Remote Code Execution Vulnerability

State
Published
Severity
7.5 High
Published
Jan 13, 2026
Updated
Jul 30, 2026
Reserved
Dec 11, 2025

Read the record on cve.org

Description

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

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Cmicrosoft

Weaknesses

  • CWE-502 Deserialization of Untrusted Data

Affected Products

ProductVersions
Azure Core shared client library for PythonMicrosoft
  • 1.1.0 to before 1.38.0Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.