What is CVE-2026-42789?

CVE-2026-42789 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Non-CA certificate accepted as intermediate issuer in public_key path validation

Which CVE IDs does CVE-2026-42789 cover?

CVE-2026-42789 covers the following CVE IDs: CVE-2026-42789. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-42789?

CVE-2026-42789 affects 1 product, including: azl3 erlang 26.2.5.20-1 on Azure Linux 3.0.

CVE-2026-42789High

Non-CA certificate accepted as intermediate issuer in public_key path validation

Vendor

Microsoft Security Response Center (MSRC)

Published

June 1, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-42789 →

🎯 Affected products1

azl3 erlang 26.2.5.20-1 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 26.2.5.21-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42789
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade