CVE-2026-21226 — HIGH (7.5)

Q: What is CVE-2026-21226?

CVE-2026-21226 is a vulnerability with a CVSS score of 7.5 (HIGH). Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.

Q: How severe is CVE-2026-21226?

CVE-2026-21226 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-21226?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Azure Core Shared Client Library.

Vulnerability Description

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

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	Azure Core Shared Client Library	>= 1.1.0, < 1.38.0

Related Weaknesses (CWE)

CWE-502

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21226Vendor Advisory

FAQ

What is CVE-2026-21226?

CVE-2026-21226 is a vulnerability with a CVSS score of 7.5 (HIGH). Deserialization of untrusted data in Azure Core shared client library for Python allows an authorized attacker to execute code over a network.

How severe is CVE-2026-21226?

CVE-2026-21226 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21226?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Azure Core Shared Client Library.