Quick answers
- Is CVE-2026-69764 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69764 being exploited in the wild.
- How severe is CVE-2026-69764?
- High severity, with a CVSS score of 8.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Word.
- Is there a fix for CVE-2026-69764?
- 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-2026-69764 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-69764?
- Check whether you run Microsoft 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 heap-based buffer overflow vulnerability exists in Microsoft Office Word's document parsing logic. The vulnerability can be triggered by a specially crafted Office document sent over the network; no user authentication is required, though the user must open the malicious file. An attacker can exploit this to achieve remote code execution with the privileges of the user running Word. The vulnerability is classified as high-severity with a CVSS score of 8.8, and patches are available from Microsoft.
Affected products
- Microsoft Word
Timeline
- 2026-09-08: disclosed