Quick answers
- Is CVE-2026-80080 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-80080 being exploited in the wild.
- How severe is CVE-2026-80080?
- High severity, with a CVSS score of 8.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Office Word.
- Is there a fix for CVE-2026-80080?
- 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-2026-80080 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-80080?
- 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 double free vulnerability exists in Microsoft Office Word's document parsing logic, where the same memory region is freed multiple times during the processing of specially crafted documents. The vulnerability is triggered when Word processes a malicious .docx or similar Office document sent over a network. An attacker can exploit this memory corruption to achieve arbitrary code execution in the context of the Office application. No user authentication is required beyond normal file opening; the attack vector is network-based. A fix is expected to be available through Microsoft's security updates.
Affected products
- Microsoft Office Word
Timeline
- 2026-09-08: disclosed