# CVE-2026-105729: Microsoft SysInternals privilege escalation via pointer dereference

Source: https://junglewise.ai/threats/cve-2026-105729-untrusted-pointer-dereference-in-sysinternals-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-2026-105729 · Severity: high · CVSS 7.1 · Published 2026-10-13

Microsoft SysInternals is a suite of diagnostic and monitoring tools used by system administrators. An authorized local user can exploit an untrusted pointer dereference vulnerability to gain elevated privileges on the system, potentially allowing them to take full control of the computer or access sensitive data.

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

## Quick answers

**Is CVE-2026-105729 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105729 being exploited in the wild.

**How severe is CVE-2026-105729?** High severity, with a CVSS score of 7.1, published 13 October 2026.

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

**Is there a fix for CVE-2026-105729?** 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-2026-105729 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-105729?** 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

The vulnerability is an untrusted pointer dereference in SysInternals that permits privilege escalation. An authorized attacker with local access can trigger the vulnerability through a malicious pointer manipulation to gain system-level privileges. The attack requires existing user-level access to the system.

## Affected products

- Microsoft SysInternals

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105729](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105729)

## Related threats

- [SysInternals stack-based buffer overflow privilege escalation](https://junglewise.ai/threats/cve-2026-105732-stack-based-buffer-overflow-in-sysinternals-allows-an-authorized)
- [Microsoft SysInternals pointer dereference privilege escalation](https://junglewise.ai/threats/cve-2026-100205-untrusted-pointer-dereference-in-sysinternals-allows-an)