CVE-2026-77907

Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in Visual Studio

Publication date: 2026-09-08

Last updated on: 2026-09-10

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-08

Last Modified

2026-09-10

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-77907

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	visual_studio_2026	From 18.9.0 (inc) to 18.9.3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in Microsoft Visual Studio. It allows an unauthorized attacker to execute arbitrary code remotely over a network by exploiting a flaw in memory handling.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially gaining control over it. This could lead to data theft, system damage, or further network compromise if you use Visual Studio.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements like GDPR (data protection) or HIPAA (health information security). Organizations must address it to maintain regulatory compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft for Visual Studio as soon as possible to patch the heap-based buffer overflow vulnerability.

Hi! I’m here to help you understand CVE-2026-77907. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70