# CVE-2026-83735: Microsoft Windows Kernel use-after-free privilege escalation

Source: https://junglewise.ai/threats/cve-2026-83735-release-of-invalid-pointer-or-reference-in-windows-kernel-allows  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-29  
License: CC BY 4.0 with a link back

CVE-2026-83735 · Severity: high · CVSS 7.8 · Published 2026-10-13

A flaw in the Windows Kernel allows an authorized local user to gain system-level privileges through a use-after-free vulnerability. Attackers with basic user account access can escalate to full administrative control of the system, potentially compromising all data and applications running on the affected computer.

Technologies: [Microsoft Windows Kernel](https://junglewise.ai/threats/technologies/windows-kernel), [Microsoft Windows 11 23h2](https://junglewise.ai/threats/technologies/windows-11-23h2), [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2), [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2), [Microsoft Windows 11 26h1](https://junglewise.ai/threats/technologies/windows-11-26h1), [Microsoft Windows 11 26h2](https://junglewise.ai/threats/technologies/windows-11-26h2), [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-83735 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83735 being exploited in the wild.

**How severe is CVE-2026-83735?** High severity, with a CVSS score of 7.8, published 13 October 2026.

**Which products and versions are affected?** Microsoft Windows Kernel.

**Is there a fix for CVE-2026-83735?** 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-2026-83735 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-83735?** Check whether you run Microsoft Windows Kernel, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2 or one of the others listed. 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 use-after-free vulnerability in the Windows Kernel allows a local authenticated attacker to elevate privileges. The attack requires local system access but no additional user interaction. Successful exploitation grants the attacker kernel-mode code execution and full system compromise.

## Affected products

- Microsoft Windows Kernel

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83735](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83735)

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