VulnerabilityModified
CVE-2021-38655
Microsoft Excel Remote Code Execution Vulnerability
HIGH 7.8EPSS 6.33%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Microsoft Excel Remote Code Execution Vulnerability
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 6.33% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- microsoft/365 apps · microsoft/excel · microsoft/office · microsoft/office online server · microsoft/office web apps
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38655
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38655Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1080/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.