What is CVE-2026-0861?

CVE-2026-0861 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Integer overflow in memalign leads to heap corruption

Which CVE IDs does CVE-2026-0861 cover?

CVE-2026-0861 covers the following CVE IDs: CVE-2026-0861. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-0861?

CVE-2026-0861 has a CVSS v3 base score of 7.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-0861?

CVE-2026-0861 affects 4 products, including: azl3 glibc 2.38-16 on Azure Linux 3.0; azl3 glibc 2.38-18 on Azure Linux 3.0; cbl2 glibc 2.35-7 on CBL Mariner 2.0; cbl2 glibc 2.35-9 on CBL Mariner 2.0.

CVE-2026-0861MediumCVSS 7.3

Integer overflow in memalign leads to heap corruption

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-0861 →

🎯 Affected products4

azl3 glibc 2.38-16 on Azure Linux 3.0
azl3 glibc 2.38-18 on Azure Linux 3.0
cbl2 glibc 2.35-7 on CBL Mariner 2.0
cbl2 glibc 2.35-9 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 2.35-9 KBCBL-Mariner Releases (Security Update) — fixed build 2.38-18

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0861
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade