What is CVE-2026-28420?

CVE-2026-28420 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Vim has Heap-based Buffer Overflow and OOB Read in :terminal

Which CVE IDs does CVE-2026-28420 cover?

CVE-2026-28420 covers the following CVE IDs: CVE-2026-28420. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-28420?

CVE-2026-28420 has a CVSS v3 base score of 4.4, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-28420?

CVE-2026-28420 affects 2 products, including: azl3 vim 9.1.1616-1 on Azure Linux 3.0; cbl2 vim 9.1.1616-1 on CBL Mariner 2.0.

CVE-2026-28420MediumCVSS 4.4

Vim has Heap-based Buffer Overflow and OOB Read in :terminal

Vendor

Microsoft Security Response Center (MSRC)

Published

March 1, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-28420 →

🎯 Affected products2

azl3 vim 9.1.1616-1 on Azure Linux 3.0
cbl2 vim 9.1.1616-1 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 9.2.0088-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-28420
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade