# CVE-2026-113759: Microsoft Office Word use-after-free remote code execution

Source: https://junglewise.ai/threats/cve-2026-113759-use-after-free-in-microsoft-office-word-allows-an-unauthorized  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-113759 · Severity: high · CVSS 7.8 · Published 2026-11-10

Microsoft Office Word, a widely-used document editing application found in most corporate environments, contains a use-after-free vulnerability that allows an attacker to execute arbitrary code with local access. An attacker who tricks a user into opening a malicious Word document could gain code execution at the privilege level of the user, potentially leading to data theft, system compromise, or lateral movement within a network.

Technologies: [Microsoft Office Word](https://junglewise.ai/threats/technologies/office-word). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-113759 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-113759 being exploited in the wild.

**How severe is CVE-2026-113759?** High severity, with a CVSS score of 7.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Office Word.

**Is there a fix for CVE-2026-113759?** 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-2026-113759 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2026-113759?** Check whether you run Microsoft Office Word. 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 flaw in Microsoft Office Word's memory management allows code execution when processing specially crafted documents. The vulnerability requires user interaction (opening a malicious document) and local execution context; it has not been observed exploited in the wild. The fix is available from Microsoft.

## Affected products

- Microsoft Office Word

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113759](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113759)

## Related threats

- [Microsoft Office Word buffer over-read information disclosure](https://junglewise.ai/threats/cve-2026-124233-buffer-over-read-in-microsoft-office-word-allows-an-unauthorized)
- [Microsoft Office Word use of uninitialized resource](https://junglewise.ai/threats/cve-2026-124185-use-of-uninitialized-resource-in-microsoft-office-word-allows-an)
- [Microsoft Office Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-123394-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)
- [Microsoft Office Word heap buffer overflow](https://junglewise.ai/threats/cve-2026-116925-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)
- [Microsoft Office Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116923-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)