What is CVE-2026-62299?

CVE-2026-62299 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record

Which CVE IDs does CVE-2026-62299 cover?

CVE-2026-62299 covers the following CVE IDs: CVE-2026-62299. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-62299?

CVE-2026-62299 has a CVSS v3 base score of 5.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-62299?

CVE-2026-62299 affects 2 products, including: azl3 coredns 1.11.4-17 on Azure Linux 3.0; azl3 coredns 1.11.4-20 on Azure Linux 3.0.

CVE-2026-62299MediumCVSS 5.3

CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record

Vendor

Microsoft Security Response Center (MSRC)

Published

July 18, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-62299 →

🎯 Affected products2

azl3 coredns 1.11.4-17 on Azure Linux 3.0
azl3 coredns 1.11.4-20 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.11.4-20 KBCBL-Mariner Releases (Security Update) — fixed build 1.11.4-18

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62299
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade