Common Weakness Enumeration
CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
3786 vulnerabilities reference this CWE, most recent first.
CVE-2026-20859 (GCVE-0-2026-20859)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:46
VLAI
EPSS
VEX
Title
Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
Summary
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
- CWE-416 - Use After Free
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20858 (GCVE-0-2026-20858)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:46
VLAI
EPSS
VEX
Title
Windows Management Services Elevation of Privilege Vulnerability
Summary
Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.6809
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.6809
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.4648
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2092
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20854 (GCVE-0-2026-20854)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:47
VLAI
EPSS
VEX
Title
Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability
Summary
Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
- CWE-416 - Use After Free
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20844 (GCVE-0-2026-20844)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:46
VLAI
EPSS
VEX
Title
Windows Clipboard Server Elevation of Privilege Vulnerability
Summary
Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.6809
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.6809
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.4648
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2092
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20842 (GCVE-0-2026-20842)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:46
VLAI
EPSS
VEX
Title
Microsoft DWM Core Library Elevation of Privilege Vulnerability
Summary
Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
- CWE-416 - Use After Free
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.6809
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.6809
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.4648
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2092
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20830 (GCVE-0-2026-20830)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:47
VLAI
EPSS
VEX
Title
Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:55 UTC
CWE
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20822 (GCVE-0-2026-20822)
Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-07-30 20:46
VLAI
EPSS
VEX
Title
Windows Graphics Component Elevation of Privilege Vulnerability
Summary
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 04:56 UTC
CWE
- CWE-416 - Use After Free
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.6809
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.6809
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6491
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.7623
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.7623
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.8783
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.8276
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.4648
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2092
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32230
(custom)
|
Date Public
2026-01-13 16:00
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CVE-2026-20591 (GCVE-0-2026-20591)
Vulnerability from cvelistv5 – Published: 2026-11-02 02:34 – Updated: 2026-11-03 04:55
VLAI
EPSS
VEX
Summary
In GPU pdma, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11365075; Issue ID: MSV-9546.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
MediaTek
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT6993
Affected: MT8910 |
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CVE-2026-20583 (GCVE-0-2026-20583)
Vulnerability from cvelistv5 – Published: 2026-11-02 02:34 – Updated: 2026-11-02 16:45
VLAI
EPSS
VEX
Summary
In usb, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11411916; Issue ID: MSV-9747.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 16:44 UTC
CWE
- CWE-416 - Use After Free
Assigner
MediaTek
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT6739
Affected: MT6761 Affected: MT6765 Affected: MT6768 Affected: MT6769 Affected: MT6781 Affected: MT6789 Affected: MT6833 Affected: MT6835 Affected: MT6853 Affected: MT6855 Affected: MT6858 Affected: MT6877 Affected: MT6878 Affected: MT6879 Affected: MT6881 Affected: MT6883 Affected: MT6885 Affected: MT6886 Affected: MT6889 Affected: MT6893 Affected: MT6895 Affected: MT6897 Affected: MT6899 Affected: MT6983 Affected: MT6985 Affected: MT6989 Affected: MT6991 Affected: MT6993 Affected: MT8188 Affected: MT8189 Affected: MT8196 Affected: MT8668 Affected: MT8768 Affected: MT8786 |
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CVE-2026-20581 (GCVE-0-2026-20581)
Vulnerability from cvelistv5 – Published: 2026-11-02 02:33 – Updated: 2026-11-03 04:55
VLAI
EPSS
VEX
Summary
In usb, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11411985; Issue ID: MSV-9750.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
MediaTek
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT6858
Affected: MT6881 Affected: MT6993 Affected: MT8188 Affected: MT8189 Affected: MT8518S Affected: MT8532 Affected: MT8668 |
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Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.