# CVE-2025-62220: Heap-based buffer overflow in Windows Subsystem for Linux GUI allows an unauthorized attacker to execute code over a network.

Source: https://junglewise.ai/threats/cve-2025-62220-heap-based-buffer-overflow-in-windows-subsystem-for-linux-gui  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-11  
License: CC BY 4.0 with a link back

CVE-2025-62220 · Severity: high · CVSS 8.8 · Published 2025-11-11

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

Technologies: [Microsoft Windows Subsystem For Linux](https://junglewise.ai/threats/technologies/windows-subsystem-for-linux). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2025-62220 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-62220 being exploited in the wild.

**How severe is CVE-2025-62220?** High severity, with a CVSS score of 8.8, published 11 November 2025.

**Which products and versions are affected?** Microsoft Windows Subsystem For Linux. The advisory does not name versions.

**Is there a fix for CVE-2025-62220?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-62220?** Check whether you run Microsoft Windows Subsystem For Linux. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Windows Subsystem For Linux

## Related threats

- [Windows Subsystem for Linux use-after-free privilege escalation](https://junglewise.ai/threats/cve-2026-88237-use-after-free-in-windows-subsystem-for-linux-allows-an)
- [Windows Subsystem for Linux out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-119846-out-of-bounds-read-in-windows-subsystem-for-linux-allows-an)
- [Microsoft Windows Subsystem for Linux heap buffer overflow](https://junglewise.ai/threats/cve-2026-119834-heap-based-buffer-overflow-in-windows-subsystem-for-linux-allows)
- [Docker Desktop for Windows WSL2 seccomp bypass via 32-bit socketcall](https://junglewise.ai/threats/cve-2026-112917-in-docker-desktop-for-windows-with-the-wsl2-backend-an)
- [Microsoft Windows Subsystem for Linux information disclosure](https://junglewise.ai/threats/cve-2026-96206-use-of-uninitialized-resource-in-windows-subsystem-for-linux)