What is CVE-2026-58227?

CVE-2026-58227 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain

Which CVE IDs does CVE-2026-58227 cover?

CVE-2026-58227 covers the following CVE IDs: CVE-2026-58227. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-58227?

CVE-2026-58227 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-58227?

CVE-2026-58227 affects 2 products, including: azl3 erlang 26.2.5.21-4 on Azure Linux 3.0; azl4 erlang 26.2.5.21-14.azl4 on Azure Linux 4.0.

CVE-2026-58227HighCVSS 7.5

TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain

Vendor

Microsoft Security Response Center (MSRC)

Published

August 7, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-58227 →

🎯 Affected products2

azl3 erlang 26.2.5.21-4 on Azure Linux 3.0
azl4 erlang 26.2.5.21-14.azl4 on Azure Linux 4.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 26.2.5.21-3 KBRelease Notes (Security Update) — fixed build 0:26.2.5.21-14.azl4

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58227
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade