November 3, 2021 · Applied Cybernetics Group
CVE-2021-27059 — Microsoft Office
Microsoft Office Remote Code Execution Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- Microsoft
- Product
- Office
- EPSS
- 86.6th percentile (score 0.032, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- ATT&CK
- T1203 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-27059
CISA short description
Microsoft Office contains an unspecified vulnerability that allows for remote code execution.
Required action
Apply updates per vendor instructions.