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
- 93.0th percentile (score 0.061, as of
2026-09-16) - NVD CVSS v3.1
- 7.6 (HIGH)
- 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.
NVD description
Microsoft Office Remote Code Execution Vulnerability