What is CVE-2026-32776?

CVE-2026-32776 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.

Which CVE IDs does CVE-2026-32776 cover?

CVE-2026-32776 covers the following CVE IDs: CVE-2026-32776. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-32776?

CVE-2026-32776 has a CVSS v3 base score of 4.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-32776?

CVE-2026-32776 affects 7 products, including: azl3 cmake 3.30.3-12 on Azure Linux 3.0; azl3 expat 2.6.4-4 on Azure Linux 3.0; azl3 expat 2.6.4-5 on Azure Linux 3.0; azl3 python3 3.12.9-9 on Azure Linux 3.0; cbl2 cmake 3.21.4-21 on CBL Mariner 2.0; and others — see the full list on the advisory page.

CVE-2026-32776MediumCVSS 4.0

libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-32776 →

🎯 Affected products7

azl3 cmake 3.30.3-12 on Azure Linux 3.0
azl3 expat 2.6.4-4 on Azure Linux 3.0
azl3 expat 2.6.4-5 on Azure Linux 3.0
azl3 python3 3.12.9-9 on Azure Linux 3.0
cbl2 cmake 3.21.4-21 on CBL Mariner 2.0
cbl2 expat 2.6.4-4 on CBL Mariner 2.0
cbl2 expat 2.6.4-4 on CBL-Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 2.6.4-5 KBRelease Notes (Security Update) — fixed build 2.6.4-5

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32776
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade