# CVE-2026-69518: Microsoft Windows Remote Desktop heap-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-69518-microsoft-windows-remote-desktop-heap-based-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-69518 · Severity: high · CVSS 8.8 · Published 2026-09-08

Windows Remote Desktop is a component that enables remote access to Windows systems over a network. A heap-based buffer overflow in this component could allow an attacker to execute arbitrary code remotely, potentially gaining complete control of affected systems without requiring authentication or user interaction.

Technologies: [Microsoft Windows Remote Desktop](https://junglewise.ai/threats/technologies/windows-remote-desktop). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69518 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69518 being exploited in the wild.

**How severe is CVE-2026-69518?** High severity, with a CVSS score of 8.8, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Remote Desktop.

**Is there a fix for CVE-2026-69518?** 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.

**How is CVE-2026-69518 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-69518?** Check whether you run Microsoft Windows Remote Desktop. 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.

## Technical details

A heap-based buffer overflow vulnerability exists in Microsoft Windows Remote Desktop that can be exploited over the network. The vulnerability allows an unauthorized attacker to execute code remotely without authentication. The attack vector is network-based, meaning exploitation is possible from any networked machine without requiring prior system access or user interaction. Successful exploitation could lead to remote code execution with system-level privileges.

## Affected products

- Microsoft Windows Remote Desktop

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69518](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69518)

## Related threats

- [Microsoft Windows Remote Desktop null pointer dereference](https://junglewise.ai/threats/cve-2026-119932-null-pointer-dereference-in-windows-remote-desktop-allows-an)
- [Microsoft Windows Remote Desktop cryptographic algorithm bypass](https://junglewise.ai/threats/cve-2026-59116-use-of-a-broken-or-risky-cryptographic-algorithm-in-windows)
- [Microsoft Windows Remote Desktop heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-40398-microsoft-windows-remote-desktop-heap-overflow-privilege)