VulnerabilityModified
CVE-2023-21716
Microsoft Word Remote Code Execution Vulnerability
CRITICAL 9.8EPSS 84.8%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 84.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
Microsoft Word Remote Code Execution Vulnerability
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 84.80% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- microsoft/office · microsoft/office long term servicing channel · microsoft/office online server · microsoft/office web apps · microsoft/sharepoint enterprise server · microsoft/sharepoint foundation · microsoft/sharepoint server · microsoft/word
- Source
- secure@microsoft.com
EPSS moved from 84.8% on 24 September 2026 to 84.8% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.