# CVE-2026-69916: Windows NTFS integer overflow allows privilege escalation

Source: https://junglewise.ai/threats/cve-2026-69916-integer-overflow-or-wraparound-in-windows-ntfs-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-2026-69916 · Severity: high · CVSS 7.8 · Published 2026-10-13

An integer overflow vulnerability in the Windows NTFS file system component allows an authenticated user with local access to escalate their privileges to system level. An attacker exploiting this flaw could gain administrative control of the affected system and access sensitive files or launch further attacks.

Technologies: [Microsoft Windows NTFS](https://junglewise.ai/threats/technologies/windows-ntfs). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69916 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69916 being exploited in the wild.

**How severe is CVE-2026-69916?** High severity, with a CVSS score of 7.8, published 13 October 2026.

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

**Is there a fix for CVE-2026-69916?** 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-2026-69916 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-69916?** Check whether you run Microsoft Windows NTFS 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

An integer overflow or wraparound condition exists in Windows NTFS that can be triggered by an authenticated local attacker. The vulnerability allows privilege escalation from a standard user account to SYSTEM-level privileges. A fix is available through Microsoft security updates.

## Affected products

- Microsoft Windows NTFS <UNKNOWN>

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69916](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69916)

## Related threats

- [Windows NTFS pointer dereference remote code execution](https://junglewise.ai/threats/cve-2026-105542-untrusted-pointer-dereference-in-windows-ntfs-allows-an)
- [Windows NTFS improper access control information disclosure](https://junglewise.ai/threats/cve-2026-83864-improper-access-control-in-windows-ntfs-allows-an-authorized)
- [Windows NTFS format string privilege elevation](https://junglewise.ai/threats/cve-2026-83585-use-of-externally-controlled-format-string-in-windows-ntfs-allows)
- [Windows NTFS out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-83508-out-of-bounds-read-in-windows-ntfs-allows-an-authorized-attacker)
- [Microsoft Windows NTFS out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-77503-microsoft-windows-ntfs-out-of-bounds-read-privilege-escalation)