The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
7,484 vulnerabilities with CWE-416
CVE-2026-21221
HIGH
Capability Access Management Service - Privilege Escalation
CVSS 7.0
CVE-2026-21219
HIGH
Microsoft Windows SDK COM Objects - Use After Free
CVSS 7.0
CVE-2026-20953
HIGH
Microsoft 365 Apps and Office - Use-After-Free
CVSS 8.4
CVE-2026-20952
HIGH
Microsoft 365 Apps and Office - Use-After-Free
CVSS 8.4
CVE-2026-20950
HIGH
Microsoft Office Excel - Use After Free
CVSS 7.8
CVE-2026-20924
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20923
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20920
HIGH
Windows Win32K - ICOMP < - Privilege Escalation
CVSS 7.8
CVE-2026-20918
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20877
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20874
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20873
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20871
HIGH
Desktop Windows Manager - Privilege Escalation
CVSS 7.8
CVE-2026-20870
HIGH
Microsoft Windows Win32K - Use After Free in ICOMP
CVSS 7.8
CVE-2026-20867
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20865
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20861
HIGH
Windows Management Services - Privilege Escalation
CVSS 7.8
CVE-2026-20859
HIGH
Windows Kernel-Mode Drivers - Privilege Escalation
CVSS 7.8
CVE-2026-20858
HIGH
Windows Management Services - Use After Free
CVSS 7.8
CVE-2026-20854
HIGH
Windows 11 24H2/25H2 & Server 2025 < 10.0.26200.7623 - LSASS Use-After-Free RCE
CVSS 7.5
CVE-2026-20844
HIGH
Windows Clipboard Server - Privilege Escalation
CVSS 7.4
CVE-2026-20842
HIGH
Windows 10 21H2/22H2, Windows 11 23H2/24H2/25H2, Windows Server 2022/2022 23H2/2025 - Use-After-Free in DWM
CVSS 7.0
CVE-2026-20830
HIGH
Capability Access Management Service - Privilege Escalation
CVSS 7.0
CVE-2026-20822
HIGH
Microsoft Graphics Component - Privilege Escalation
CVSS 7.8
CVE-2026-0885
MEDIUM
Firefox < 140.7.0 and < 147.0 - Use-After-Free in JavaScript GC
CVSS 6.5
Details
Vulnerabilities
7,484
Exploit Likelihood
High