# CVE-2026-69604: Microsoft Windows Audio Service heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-69604-microsoft-windows-audio-service-heap-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-2026-69604 · Severity: high · CVSS 7.8 · Published 2026-09-08

Windows Audio Service, a core component of the Microsoft Windows operating system responsible for processing audio, contains a heap buffer overflow vulnerability. An authorized attacker with local system access could exploit this flaw to execute code with elevated privileges, potentially compromising the entire system and any data stored on it.

Technologies: [Microsoft Windows Audio Service](https://junglewise.ai/threats/technologies/windows-audio-service). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69604 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69604 being exploited in the wild.

**How severe is CVE-2026-69604?** High severity, with a CVSS score of 7.8, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Audio Service.

**Is there a fix for CVE-2026-69604?** 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-2026-69604 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-69604?** Check whether you run Microsoft Windows Audio Service. 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 exists in Windows Audio Service that allows an authorized local attacker to elevate privileges. The vulnerability requires the attacker to have local access to the affected system and existing authorization on that system. Successful exploitation enables arbitrary code execution with elevated privileges. The CVSS score of 7.8 indicates high severity with significant impact to system confidentiality, integrity, and availability. Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Windows Audio Service

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69604](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69604)

## Related threats

- [Windows Audio Service out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96314-out-of-bounds-read-in-windows-audio-service-allows-an-authorized)
- [Microsoft Windows Audio Service use-after-free privilege escalation](https://junglewise.ai/threats/cve-2026-69692-microsoft-windows-audio-service-use-after-free-privilege)