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Vulnerability record · CVE-2026-77906 · published 8 September 2026

CVE-2026-77906: Microsoft visual studio 2026 heap-based buffer overflow vulnerability

Microsoft · Visual Studio 2026

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

8.8 CVSS 3.1 High EPSS 0.82% · top 44.5% CWE-122 · Heap-based buffer overflow
8.8CVSS 3.1 base score
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
11 Sep 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77906 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-47304Microsoft .net framework insufficient verification of data authenticity vulnerabilityImproper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.EPSS 0.29%8.8CVE-2026-77907Microsoft visual studio 2026 heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.EPSS 0.82%8.8CVE-2026-71328Microsoft visual studio 2022 heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.EPSS 0.76%8.8CVE-2026-47300Microsoft .net vulnerabilityIncorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.EPSS 0.78%8.8CVE-2026-47303Microsoft .net ldap injection vulnerabilityAuthentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.EPSS 0.84%8.2CVE-2026-50528Microsoft .net incorrect authorization vulnerabilityIncorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.EPSS 0.61%7.8CVE-2026-70354Microsoft visual studio 2022 out-of-bounds write vulnerabilityOut-of-bounds write in .NET allows an unauthorized attacker to execute code locally.EPSS 0.36%7.8CVE-2026-62909Microsoft visual studio 2022 unchecked return value vulnerabilityUncaught exception in .NET allows an authorized attacker to elevate privileges locally.EPSS 0.26%

Source: NIST National Vulnerability Database (record CVE-2026-77906), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.