What is CVE-2025-21171?

CVE-2025-21171 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.10, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-01-14.

How severe is CVE-2025-21171?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Microsoft Visual Studio 2022 Version 17.10

CVE-2025-21171

.NET Remote Code Execution Vulnerability

Vulnerability class: Buffer Overflow

EPSS: 0.006 (69.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Visual Studio 2022 Version 17.10 — versions 17.10.0
Microsoft Visual Studio 2022 Version 17.12 — versions 17.12.0
Microsoft Visual Studio 2022 Version 17.6 — versions 17.6.0
Microsoft Visual Studio 2022 Version 17.8 — versions 17.8.0
Microsoft .Net 9.0 — versions 9.0.0
Microsoft Powershell 7.5 — versions 7.5.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

.NET Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-21171?: CVE-2025-21171 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.10, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-01-14.
How severe is CVE-2025-21171?: High severity. CVSS v3 base score is 7.5 out of 10.