CVE-2026-32175ImportantRevised 19 May
.NET Core Tampering Vulnerability
Assessment
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.
- Severity
- Important
- CVSS base score
- 4.3CVSS:3.1/
AV:N/ AC:L/ PR:L/ UI:N/ S:U/ C:N/ I:L/ A:N/ E:U/ RL:O/ RC:C - Impact
- Tampering
- EPSS, next 30 days
- 0.6%Higher than 48.5% of scored CVEs · FIRST model run 29 Sep 2026 · about EPSS
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- .NET
- Weakness
- CWE-36: Absolute Path Traversal
- Issued by
- Microsoft
- Published
- 12 May 2026 · May 2026
- Last revised
- 19 May 2026Removed incorrectly added rows from the Security Updates table. This is an informational change only.
Updates that fix it
3 KBs| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5093446 | Security Update | — | .NET 10.0 installed on Windows | All CVEs in KB5093446 |
| KB5093447 | Security Update | — | .NET 8.0 installed on Windows | All CVEs in KB5093447 |
| KB5093448 | Security Update | — | .NET 9.0 installed on Windows | All CVEs in KB5093448 |
Affected products
Developer Tools6 affected products
- .NET 10.0 installed on Windows
- .NET 8.0 installed on Windows
- .NET 9.0 installed on Windows
- Microsoft Visual Studio 2022 version 17.12
- Microsoft Visual Studio 2022 version 17.14
- Microsoft Visual Studio 2026 version 18.5