What is CVE-2026-19542?

CVE-2026-19542 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Stack-based out-of-bounds write in tdelete during tree rebalancing

Which CVE IDs does CVE-2026-19542 cover?

CVE-2026-19542 covers the following CVE IDs: CVE-2026-19542. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-19542?

CVE-2026-19542 has a CVSS v3 base score of 5.6, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-19542?

CVE-2026-19542 affects 1 product, including: azl3 glibc 2.38-21 on Azure Linux 3.0.

CVE-2026-19542MediumCVSS 5.6

Stack-based out-of-bounds write in tdelete during tree rebalancing

Vendor

Microsoft Security Response Center (MSRC)

Published

September 16, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-19542 →

🎯 Affected products1

azl3 glibc 2.38-21 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19542
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade