What is CVE-2026-93521?

CVE-2026-93521 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. X.Org Server RandR ChangeProviderProperty Heap Buffer Overflow

Which CVE IDs does CVE-2026-93521 cover?

CVE-2026-93521 covers the following CVE IDs: CVE-2026-93521. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-93521?

CVE-2026-93521 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-93521?

CVE-2026-93521 affects 2 products, including: azl3 wayland 1.22.0-1 on Azure Linux 3.0; azl3 xorg-x11-server-Xwayland 24.1.13-1 on Azure Linux 3.0.

CVE-2026-93521HighCVSS 7.8

X.Org Server RandR ChangeProviderProperty Heap Buffer Overflow

Vendor

Microsoft Security Response Center (MSRC)

Published

October 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-93521 →

🎯 Affected products2

azl3 wayland 1.22.0-1 on Azure Linux 3.0
azl3 xorg-x11-server-Xwayland 24.1.13-1 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update) KBRelease Notes (Security Update) — fixed build 24.1.14-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93521
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade