Microsoft: >> Visual Studio 2026 >> 18.5.0 Security Vulnerabilities
A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories.
To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system.
The security update fixes the vulnerability by ensuring .NET Core properly handles files.
CVSS Score
4.3
EPSS Score
0.007
Published
2026-05-12
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
CVSS Score
7.3
EPSS Score
0.006
Published
2026-05-12