What is CVE-2026-77907?

CVE-2026-77907 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Visual Studio Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-77907 cover?

CVE-2026-77907 covers the following CVE IDs: CVE-2026-77907. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-77907?

CVE-2026-77907 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-77907?

CVE-2026-77907 affects 1 product, including: Microsoft Visual Studio 2026 version 18.9.

CVE-2026-77907HighCVSS 8.8

Visual Studio Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-77907 →

📋 Description

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

🎯 Affected products1

Microsoft Visual Studio 2026 version 18.9

✅ Remediation

KBRelease Notes (Security Update) — fixed build 18.9.3

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77907
patchhttps://www.catalog.update.microsoft.com/Search.aspx?q=Visual Studio 2026 18.9.3
referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes