What is CVE-2026-76844?

CVE-2026-76844 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write

Which CVE IDs does CVE-2026-76844 cover?

CVE-2026-76844 covers the following CVE IDs: CVE-2026-76844. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-76844?

CVE-2026-76844 has a CVSS v3 base score of 7.4, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-76844?

CVE-2026-76844 affects 1 product, including: azl3 zlib 1.3.2-1 on Azure Linux 3.0.

CVE-2026-76844MediumCVSS 7.4

zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write

Vendor

Microsoft Security Response Center (MSRC)

Published

October 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-76844 →

🎯 Affected products1

azl3 zlib 1.3.2-1 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-76844
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade