Microsoft Office Remote Code Execution Vulnerability

Added to KEV
2022-02-25
Federal due date
2022-08-25
Vendor
Microsoft
Product
Office
EPSS
99.9th percentile (score 0.942, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-8570

CISA short description

A remote code execution vulnerability exists in Microsoft Office software when it fails to properly handle objects in memory.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.