Executive brief
Microsoft Visual Studio, a widely used integrated development environment, contains a heap-based buffer overflow vulnerability that allows an attacker to execute arbitrary code over the network without authentication. Exploitation of this flaw could enable attackers to gain complete control of affected developer systems, leading to compromise of source code, build artifacts, and developer credentials used to access corporate infrastructure.
Technical details
A heap-based buffer overflow exists in Microsoft Visual Studio that can be triggered over the network. The vulnerability allows an unauthenticated attacker to send a specially crafted payload that overflows a heap buffer, corrupting memory and enabling execution of arbitrary code with the privileges of the user running Visual Studio. No authentication or user interaction is required to trigger the vulnerability; the attack vector is network-based. The CVSS v3.1 score of 8.8 reflects the high severity due to the combination of network accessibility, lack of authentication requirements, and potential for complete system compromise.
Affected products
- Microsoft Visual Studio
Timeline
- 2026-09-08: disclosed