5.3mediumMedium
CVE-2021-34451
Microsoft Office Online Server
Microsoft Office Online Server Spoofing Vulnerability
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, no action by a user is required.
Scoring
- CVSS
- 5.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Assigned by
- secure@microsoft.com
Dates
- Published
- 2021-07-16
- Last modified
- 2026-08-10
- Sources
- NVD
Affected products
- Microsoft Office Online Serverall versions
As listed in the NVD configuration data. Not a statement about your estate.