Live › vulnerability › CVE-2021-27059
Go to dashboardMicrosoft Office contains an unspecified flaw that allows remote code execution. CISA lists it in the Known Exploited Vulnerabilities catalog, so attackers are using it in real attacks.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Office | vendor | – | – |
Check each Office installs version and patch level against Microsofts security update guide for CVE-2021-27059. unknown for the exact affected build list.
Apply the Microsoft Office security updates per vendor instructions, as CISA requires. unknown for the specific patched build numbers.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Office contains an unspecified vulnerability that allows for remote code execution.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-27059")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.