What is CVE-2026-115449?

CVE-2026-115449 is a security advisory published by Microsoft Security Response Center (MSRC). Libslirp: libslirp: icmp echo reply length desynchronization leaks host ip to guest

Which CVE IDs does CVE-2026-115449 cover?

CVE-2026-115449 covers the following CVE IDs: CVE-2026-115449. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-115449?

CVE-2026-115449 has a CVSS v3 base score of 3.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-115449?

CVE-2026-115449 affects 1 product, including: azl3 libslirp 4.9.3-1 on Azure Linux 3.0.

CVE-2026-115449CVSS 3.5

Libslirp: libslirp: icmp echo reply length desynchronization leaks host ip to guest

Vendor

Microsoft Security Response Center (MSRC)

Published

October 25, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-115449 →

🎯 Affected products1

azl3 libslirp 4.9.3-1 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update) — fixed build 4.9.6-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-115449
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade