# CVE-2026-105732: SysInternals stack-based buffer overflow privilege escalation

Source: https://junglewise.ai/threats/cve-2026-105732-stack-based-buffer-overflow-in-sysinternals-allows-an-authorized  
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-2026-105732 · Severity: high · CVSS 7.3 · Published 2026-10-13

SysInternals is a suite of system utilities used by IT administrators for diagnostics and monitoring. A stack-based buffer overflow in SysInternals could allow an authorized user to execute code with elevated privileges on their system, potentially leading to full system compromise.

Technologies: [Microsoft SysInternals](https://junglewise.ai/threats/technologies/sysinternals). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-105732 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105732 being exploited in the wild.

**How severe is CVE-2026-105732?** High severity, with a CVSS score of 7.3, published 13 October 2026.

**Which products and versions are affected?** Microsoft SysInternals.

**Is there a fix for CVE-2026-105732?** 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-2026-105732 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-105732?** Check whether you run Microsoft SysInternals. 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 stack-based buffer overflow exists in SysInternals that can be exploited by an authenticated local attacker to escalate privileges. The vulnerability requires the attacker to already have local access to the system and is not network-exploitable. Successful exploitation allows arbitrary code execution with elevated privileges.

## Affected products

- Microsoft SysInternals

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105732](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105732)

## Related threats

- [Microsoft SysInternals privilege escalation via pointer dereference](https://junglewise.ai/threats/cve-2026-105729-untrusted-pointer-dereference-in-sysinternals-allows-an)
- [Microsoft SysInternals pointer dereference privilege escalation](https://junglewise.ai/threats/cve-2026-100205-untrusted-pointer-dereference-in-sysinternals-allows-an)