# CVE-2026-47293: Microsoft Office Click-to-Run privilege escalation via use-after-free

Source: https://junglewise.ai/threats/cve-2026-47293-microsoft-office-click-to-run-privilege-escalation-via-use-after  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-47293 · Severity: high · CVSS 7 · Published 2026-06-09

A security vulnerability exists in the Microsoft Office Click-to-Run service, which is responsible for installing and updating Office applications. An attacker who already has basic access to a computer could exploit this flaw to gain full administrative control over the system. This could allow them to bypass security restrictions, access sensitive files, or install malicious software.

Technologies: [Microsoft Office Click-to-Run](https://junglewise.ai/threats/technologies/office-click-to-run). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-47293 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47293 being exploited in the wild.

**How severe is CVE-2026-47293?** High severity, with a CVSS score of 7, published 9 June 2026.

**Which products and versions are affected?** Microsoft Office Click-to-Run.

**Is there a fix for CVE-2026-47293?** 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-2026-47293 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-47293?** Check whether you run Microsoft Office Click-to-Run. 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 (CWE-416) exists within the Microsoft Office Click-to-Run component. The flaw is triggered when the service incorrectly manages memory during specific operations, allowing an attacker to execute code with higher privileges. Exploitation requires the attacker to have local access to the system with low-level user permissions. While the attack complexity is rated as high—likely due to race conditions or specific timing requirements—a successful exploit results in a complete compromise of confidentiality, integrity, and availability (SYSTEM-level privileges). Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Office Click-to-Run

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47293](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47293)

## Related threats

- [Microsoft Office Click-to-Run improper access control privilege escalation](https://junglewise.ai/threats/cve-2026-40420-microsoft-office-click-to-run-improper-access-control-privilege)
- [Microsoft Office Click-to-Run use after free privilege escalation](https://junglewise.ai/threats/cve-2026-40418-microsoft-office-click-to-run-use-after-free-privilege-escalation)
- [Microsoft Office Click-to-Run privilege escalation](https://junglewise.ai/threats/cve-2026-35436-microsoft-office-click-to-run-privilege-escalation)