CVE-2026-23665 Linux Azure Diagnostic extension (LAD) Elevation of Privilege Vulnerability
An authorized attacker can exploit a heap-based buffer overflow in the Azure Linux Diagnostic extension to elevate privileges locally.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23665?
CVE-2026-23665 is a high-severity memory corruption vulnerability in Microsoft Azure Linux Virtual Machines with Azure Diagnostics extension, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
Which versions are affected by CVE-2026-23665?
It affects 1 product.
Products include Microsoft Linux Diagnostic Extension.
How do I fix CVE-2026-23665?
No fix has been published for CVE-2026-23665 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-23665 being exploited?
There is no known exploitation of CVE-2026-23665 in the wild and no public exploit code.
Sources
Also known as GHSA-6m2p-x552-vxhp.