What is CVE-2026-6843?

CVE-2026-6843 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Nano: nano: format string vulnerability leads to denial of service

Which CVE IDs does CVE-2026-6843 cover?

CVE-2026-6843 covers the following CVE IDs: CVE-2026-6843. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-6843?

CVE-2026-6843 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-6843?

CVE-2026-6843 affects 4 products, including: azl3 nano 6.4-2 on Azure Linux 3.0; azl3 nano 6.4-3 on Azure Linux 3.0; cbl2 nano 6.0-3 on CBL Mariner 2.0; cbl2 nano 6.0-3 on CBL-Mariner 2.0.

CVE-2026-6843MediumCVSS 5.5

Nano: nano: format string vulnerability leads to denial of service

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-6843 →

🎯 Affected products4

azl3 nano 6.4-2 on Azure Linux 3.0
azl3 nano 6.4-3 on Azure Linux 3.0
cbl2 nano 6.0-3 on CBL Mariner 2.0
cbl2 nano 6.0-3 on CBL-Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 6.4-3 KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6843
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade