What is CVE-2026-23665?

CVE-2026-23665 is a high-severity vulnerability in Microsoft Azure Linux Virtual Machines With Diagnostics Extension, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-03-10.

How severe is CVE-2026-23665?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Microsoft Azure Linux Virtual Machines With Diagnostics Extension

CVE-2026-23665

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

Vulnerability class: Buffer Overflow

EPSS: 0.004 (31.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Azure Linux Virtual Machines With Diagnostics Extension — versions 1.0.0
Microsoft Linux_diagnostic_extension

Weakness classification (CWE)

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-23665?: CVE-2026-23665 is a high-severity vulnerability in Microsoft Azure Linux Virtual Machines With Diagnostics Extension, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-03-10.
How severe is CVE-2026-23665?: High severity. CVSS v3 base score is 7.8 out of 10.