What is CVE-2025-62220?

CVE-2025-62220 is a high-severity vulnerability in Microsoft Windows_subsystem_for_linux, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-11-11.

How severe is CVE-2025-62220?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Microsoft Windows_subsystem_for_linux

CVE-2025-62220

Heap-based buffer overflow in Windows Subsystem for Linux GUI allows an unauthorized attacker to execute code over a network.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (47.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows_subsystem_for_linux
Microsoft Windows Subsystem For Linux Gui — versions 1.0.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-62220?: CVE-2025-62220 is a high-severity vulnerability in Microsoft Windows_subsystem_for_linux, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-11-11.
How severe is CVE-2025-62220?: High severity. CVSS v3 base score is 8.8 out of 10.