CVE-2026-23665
Received Received - Intake

Heap-Based Buffer Overflow in Azure Linux VM Enables Privilege Escalation

Vulnerability report for CVE-2026-23665, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-03-10

Last updated on: 2026-03-20

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-03-10
Last Modified
2026-03-20
Generated
2026-07-27
AI Q&A
2026-03-10
EPSS Evaluated
2026-07-25
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft linux_diagnostic_extension From 1.0.0 (inc) to 2.1.24 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

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Executive Summary

This vulnerability is a heap-based buffer overflow found in Azure Linux Virtual Machines. It allows an authorized attacker to elevate their privileges locally on the affected system.

Detection Guidance

I don't know

Impact Analysis

The impact of this vulnerability is an elevation of privilege, meaning an attacker who already has some level of access can gain higher-level permissions. This can lead to full control over the affected Azure Linux Virtual Machine, potentially compromising confidentiality, integrity, and availability.

Compliance Impact

I don't know

Mitigation Strategies

I don't know

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EPSS Chart