# CVE-2026-83747: Microsoft Windows Error Reporting out-of-bounds read

Source: https://junglewise.ai/threats/cve-2026-83747-out-of-bounds-read-in-windows-error-reporting-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-83747 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Windows Error Reporting is a system component that collects and reports diagnostic information when applications crash. An authorized local attacker can exploit an out-of-bounds read vulnerability in this component to access sensitive information from system memory. This could lead to disclosure of confidential data such as passwords, encryption keys, or other sensitive system information.

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-2026-83747 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83747 being exploited in the wild.

**How severe is CVE-2026-83747?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

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

**Is there a fix for CVE-2026-83747?** 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-2026-83747 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-83747?** Check whether you run Microsoft Windows Error Reporting. 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

An out-of-bounds read vulnerability exists in Windows Error Reporting that allows an authenticated local attacker to read memory beyond intended boundaries. The attack requires local access and user authentication. Successful exploitation results in information disclosure from kernel or application memory.

## Affected products

- Microsoft Windows Error Reporting

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83747](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83747)

## 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)
- [Windows Error Reporting privilege escalation](https://junglewise.ai/threats/cve-2026-83669-use-of-uninitialized-resource-in-windows-error-reporting-allows)