CVE-2026-23665: Linux Azure Diagnostic extension (LAD) Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Mar

Released

2026-03-10

EPSS Score

0.04% (percentile: 13.8%)

Description

Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. What actions do customers need to take to protect themselves from this vulnerability? To protect yourself from this vulnerability, customer must update their Linux Azure Diagnostic extension (LAD) to the latest version by running the following command: > az extension update --name LinuxDiagnostic Click here to learn more.

Affected Products (1)

Azure

• Azure Linux Virtual Machines with Azure Diagnostics extension

Security Updates (1)

• Release Notes

Acknowledgments

P1hcn

Revision History

• 2026-03-10: Information published.