# CVE-2026-69513: Microsoft Windows Error Reporting heap buffer overflow privilege escalation

Source: https://junglewise.ai/threats/cve-2026-69513-microsoft-windows-error-reporting-heap-buffer-overflow-privilege  
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-2026-69513 · Severity: high · CVSS 7.8 · Published 2026-09-08

Windows Error Reporting is a system component that captures and reports application failures to Microsoft. A heap-based buffer overflow in this component allows an authorized local attacker to execute arbitrary code with elevated privileges, potentially compromising the entire system.

Technologies: [Microsoft Windows Error Reporting](https://junglewise.ai/threats/technologies/windows-error-reporting). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69513 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69513 being exploited in the wild.

**How severe is CVE-2026-69513?** High severity, with a CVSS score of 7.8, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Error Reporting <UNKNOWN>.

**Is there a fix for CVE-2026-69513?** 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-2026-69513 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-69513?** Check whether you run Microsoft Windows Error Reporting at an affected version. 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 Windows Error Reporting, a core Windows system component responsible for collecting and transmitting crash diagnostic data. The flaw allows an authenticated local attacker to overflow a heap buffer, achieving code execution with elevated privileges. Exploitation requires local access and prior authorization on the system. A successful exploit enables privilege escalation from the attacker's current privilege level to a higher level, potentially SYSTEM. Patches are expected to be available from Microsoft.

## Affected products

- Microsoft Windows Error Reporting <UNKNOWN>

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69513](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69513)

## Related threats

- [Windows Error Reporting privilege escalation in file handling](https://junglewise.ai/threats/cve-2026-94525-an-elevation-of-privilege-vulnerability-exists-in-windows-error)
- [Windows Error Reporting double free privilege escalation](https://junglewise.ai/threats/cve-2026-85862-double-free-in-windows-error-reporting-allows-an-authorized)
- [Windows Error Reporting use-after-free privilege escalation](https://junglewise.ai/threats/cve-2026-85354-use-after-free-in-windows-error-reporting-allows-an-authorized)
- [Windows Error Reporting weak authentication privilege escalation](https://junglewise.ai/threats/cve-2026-83840-weak-authentication-in-windows-error-reporting-allows-an)
- [Microsoft Windows Error Reporting out-of-bounds read](https://junglewise.ai/threats/cve-2026-83747-out-of-bounds-read-in-windows-error-reporting-allows-an)