Common Weakness Enumeration

CWE-416

Use After Free

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CVE-2026-33278 (GCVE-0-2026-33278)

Vulnerability from cvelistv5 – Published: 2026-05-20 09:18 – Updated: 2026-06-30 12:07
VLAI
Title
Possible arbitrary code execution during DNSSEC validation
Summary
NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the vulnerability by controlling a malicious signed zone and querying a vulnerable Unbound. When DS sub-queries need to suspend validation due to NSEC3 computational budget exhaustion (introduced in Unbound 1.19.1), Unbound deep-copies response messages to preserve them across memory region teardown. A struct-assignment bug overwrites the destination's pointer with the source's pointer. After the sub-query region is freed, the resumed validator dereferences this dangling pointer, triggering a crash or potentially enabling arbitrary code execution. Unbound 1.25.1 contains a patch with a fix to preserve the correct pointer when deep copying the data structure.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-416 - Use After Free
  • CWE-672 - Operation on a Resource after Expiration or Release
Assigner
References
Date Public
2026-05-20 00:00
Credits
Qifan Zhang (Palo Alto Networks)
Show details on NVD website

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CVE-2026-33416 (GCVE-0-2026-33416)

Vulnerability from cvelistv5 – Published: 2026-03-26 16:48 – Updated: 2026-04-01 03:55
VLAI
Title
LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`
Summary
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.2.1 through 1.6.55, `png_set_tRNS` and `png_set_PLTE` each alias a heap-allocated buffer between `png_struct` and `png_info`, sharing a single allocation across two structs with independent lifetimes. The `trans_alpha` aliasing has been present since at least libpng 1.0, and the `palette` aliasing since at least 1.2.1. Both affect all prior release lines `png_set_tRNS` sets `png_ptr->trans_alpha = info_ptr->trans_alpha` (256-byte buffer) and `png_set_PLTE` sets `info_ptr->palette = png_ptr->palette` (768-byte buffer). In both cases, calling `png_free_data` (with `PNG_FREE_TRNS` or `PNG_FREE_PLTE`) frees the buffer through `info_ptr` while the corresponding `png_ptr` pointer remains dangling. Subsequent row-transform functions dereference and, in some code paths, write to the freed memory. A second call to `png_set_tRNS` or `png_set_PLTE` has the same effect, because both functions call `png_free_data` internally before reallocating the `info_ptr` buffer. Version 1.6.56 fixes the issue.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
pnggroup libpng Affected: >= 1.2.1, < 1.6.56
Create a notification for this product.
Show details on NVD website

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CVE-2026-33526 (GCVE-0-2026-33526)

Vulnerability from cvelistv5 – Published: 2026-03-26 00:16 – Updated: 2026-06-30 12:07
VLAI
Title
Squid vulnerable to Denial of Service in ICP Request handling
Summary
Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. Version 7.5 contains a patch.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-416 - Use After Free
  • CWE-826 - Premature Release of Resource During Expected Lifetime
  • CWE-825 - Expired Pointer Dereference
Assigner
Impacted products
Vendor Product Version
squid-cache squid Affected: < 7.5
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Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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CVE-2026-33835 (GCVE-0-2026-33835)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:59 – Updated: 2026-06-19 16:12
VLAI
Title
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Summary
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7291 (custom)
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Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7417 (custom)
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Microsoft Windows 11 version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7079 (custom)
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Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7219 (custom)
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Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8457 (custom)
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Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8457 (custom)
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Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2113 (custom)
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Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5139 (custom)
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Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.2330 (custom)
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Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
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Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
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Date Public
2026-05-12 14:00
Show details on NVD website

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CVE-2026-33840 (GCVE-0-2026-33840)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-06-19 16:13
VLAI
Title
Win32k Elevation of Privilege Vulnerability
Summary
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8457 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8457 (custom)
Create a notification for this product.
Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2113 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Date Public
2026-05-12 14:00
Show details on NVD website

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CVE-2026-34192 (GCVE-0-2026-34192)

Vulnerability from cvelistv5 – Published: 2026-06-19 09:23 – Updated: 2026-06-22 18:21
VLAI
Title
GPU DDK - _MMU_AllocLevel error recovery paths leave dangling page table entries
Summary
Software installed and run as a non-privileged user may conduct improper GPU system calls to cause an error path leading to UAF of GPU page tables. The vulnerability allows physical memory allocated for MMU page tables to be used after being freed. This was caused by an error path that would not cleanup properly before freeing the physical allocation.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
Imagination Technologies Graphics DDK Affected: 1.18 RTM (custom)
Affected: 23.2 RTM (custom)
Affected: 24.2 RTM (custom)
Affected: 25.1 RTM , ≤ 25.3 RTM (custom)
Unaffected: 26.1 RTM (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-34196 (GCVE-0-2026-34196)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:42 – Updated: 2026-07-10 20:42
VLAI
Title
GPU DDK - UAF read and/or write of arbitrary physical memory due to integer truncation in PMRDevPhysAddrOSMem
Summary
Software installed and run as a non-privileged user may conduct improper GPU system calls to cause an integer overflow and map two GPU virtual addresses to the same physical address. One of these virutal mappings can be freed along with the physical page, allowing for a read/write UAF via the second mapping The second virtual mapping references a physical address that has been freed after the first virtual mapping has been freed. This allows the physical memory to be allocated (for example) by another process and read/written to.
Severity
No CVSS data available.
CWE
Assigner
Impacted products
Vendor Product Version
Imagination Technologies Graphics DDK Affected: 1.18 RTM2 (custom)
Affected: 23.2 RTM2 (custom)
Affected: 24.2 RTM2 (custom)
Affected: 25.1 RTM2 , ≤ 25.3 RTM (custom)
Affected: 26.1 RTM1 (custom)
Unaffected: 26.1 RTM2 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-34330 (GCVE-0-2026-34330)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-06-19 16:12
VLAI
Title
Win32k Elevation of Privilege Vulnerability
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
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Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7291 (custom)
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Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7417 (custom)
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Microsoft Windows 11 version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7079 (custom)
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Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7219 (custom)
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Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8457 (custom)
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Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8457 (custom)
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Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2113 (custom)
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Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
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Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
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Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
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Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
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Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
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Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
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Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5139 (custom)
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Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.2330 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Date Public
2026-05-12 14:00
Show details on NVD website

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CVE-2026-34331 (GCVE-0-2026-34331)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-06-19 16:12
VLAI
Title
Win32k Elevation of Privilege Vulnerability
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-416 - Use After Free
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7291 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7417 (custom)
Create a notification for this product.
Microsoft Windows 11 version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7079 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7219 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8457 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8457 (custom)
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Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2113 (custom)
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Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
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Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
Create a notification for this product.
Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5139 (custom)
Create a notification for this product.
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.2330 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Date Public
2026-05-12 14:00
Show details on NVD website

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CVE-2026-34332 (GCVE-0-2026-34332)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:59 – Updated: 2026-06-19 16:12
VLAI
Title
Windows Kernel-Mode Driver Remote Code Execution Vulnerability
Summary
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to execute code over a network.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
Create a notification for this product.
Date Public
2026-05-12 14:00
Show details on NVD website

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      "datePublic": "2026-05-12T14:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to execute code over a network."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-19T16:12:44.460Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": "Windows Kernel-Mode Driver Remote Code Execution Vulnerability",
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34332"
        }
      ],
      "title": "Windows Kernel-Mode Driver Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2026-34332",
    "datePublished": "2026-05-12T16:59:11.202Z",
    "dateReserved": "2026-03-26T21:02:16.445Z",
    "dateUpdated": "2026-06-19T16:12:44.460Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Mitigation

Phase: Architecture and Design

Strategy: Language Selection

Description:

  • Choose a language that provides automatic memory management.
Mitigation

Phase: Implementation

Strategy: Attack Surface Reduction

Description:

  • 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.

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