Microsoft Office 2021 vulnerabilities
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Published CVEs affecting Microsoft Office 2021: 465 record(s), with affected versions and fixes.cpe:2.3:a:microsoft:office_2021
CVE-2026-45459
Low · 3.3
CWE-693 Jun 9, 2026
Microsoft Excel Security Feature Bypass Vulnerability
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-45458
High · 8.4
CWE-416 Jun 9, 2026
Microsoft Outlook and Word Remote Code Execution Vulnerability
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45457
High · 7.8
CWE-125 Jun 9, 2026
Microsoft Word Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-45456
High · 8.4
CWE-843 Jun 9, 2026
Microsoft Outlook and Word Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-45455
Medium · 4.3
CWE-125 Jun 9, 2026
Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-44824
High · 7.8
CWE-122 Jun 9, 2026
Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-44823
High · 7.8
CWE-197 Jun 9, 2026
Microsoft Excel Remote Code Execution Vulnerability
Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-44822
High · 8.2
CWE-125 Jun 9, 2026
Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-44821
Medium · 5.5
CWE-125 Jun 9, 2026
Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-44820
High · 7.8
CWE-125 Jun 9, 2026
Microsoft Excel Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-44819
High · 7.8
CWE-122 Jun 9, 2026
Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-44818
High · 7.0
CWE-362 Jun 9, 2026
Microsoft Excel Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-44817
High · 7.8
CWE-843 Jun 9, 2026
Microsoft Excel Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2023-35311
High · 8.8
KEV High · 56 CWE-367 Jul 11, 2023
Microsoft Outlook Security Feature Bypass Vulnerability
Microsoft Outlook Security Feature Bypass Vulnerability
CVE-2021-42292
High · 7.8
KEV High · 62 Public exploit Nov 9, 2021
Microsoft Excel Security Feature Bypass
Microsoft Excel Security Feature Bypass Vulnerability