What is CVE-2026-16554?

CVE-2026-16554 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Integer Overflow Leading to Heap Buffer Overflow in cJSON

Which CVE IDs does CVE-2026-16554 cover?

CVE-2026-16554 covers the following CVE IDs: CVE-2026-16554. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-16554?

CVE-2026-16554 affects 2 products, including: azl3 apparmor 3.1.7-1 on Azure Linux 3.0; azl3 libglvnd 1.7.0-3 on Azure Linux 3.0.

CVE-2026-16554Medium

Integer Overflow Leading to Heap Buffer Overflow in cJSON

Vendor

Microsoft Security Response Center (MSRC)

Published

August 7, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-16554 →

🎯 Affected products2

azl3 apparmor 3.1.7-1 on Azure Linux 3.0
azl3 libglvnd 1.7.0-3 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-16554
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade