6.5mediumMedium
CVE-2026-64918
Microsoft 365 Apps
Insufficiently protected credentials in Microsoft Office allows an unauthorized attacker to perform spoofing over a network.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, someone has to be persuaded to take an action first.
Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N- Weakness
- CWE-522
- Assigned by
- secure@microsoft.com
Dates
- Published
- 2026-09-08
- Last modified
- 2026-09-09
- Sources
- NVD
Affected products
- Microsoft 365 Appsall versions
- Microsoft Office 2016all versions
- Microsoft Office 2019all versions
- Microsoft Office 2021all versions
- Microsoft Office 2024all versions
As listed in the NVD configuration data. Not a statement about your estate.