Actively exploited in the wild
Microsoft Office Remote Code Execution Vulnerability
Microsoft - Office · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2021-27059
HighCVSS 7.6KEVExploitation Probability (EPSS)
Very high risk93th percentile - higher than 93% of all known CVEs
Summary
Microsoft Office Remote Code Execution Vulnerability. Details are not provided in the description, but it allows remote code execution.
Risk Assessment
An attacker could remotely execute arbitrary code on the system, potentially leading to full system and data compromise.
Recommendation
It is recommended to immediately apply patches released by Microsoft for Office.
Other vulnerabilities in Microsoft Office
See all- CVE-2026-42832High
Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.
- CVE-2026-42831High
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-40419High
A use after free vulnerability in Microsoft Office allows an authorized attacker to locally elevate privileges.
- CVE-2026-40363High
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-26134High
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
- CVE-2026-26110High
Microsoft Office has a vulnerability related to resource access using an incompatible type ('type confusion'), allowing an unauthorized attacker to execute code locally.
- CVE-2026-20953High
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-20952High
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-20943High
An untrusted search path vulnerability in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-62557High
A use after free vulnerability in Microsoft Office allows an unauthorized attacker to execute code locally.
Original NVD description (English source)
Microsoft Office Remote Code Execution Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS