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CVE WatchJul 23, 2026

CVE-2026-45657

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

CVSS

9.8

Critical

EPSS

15.5%

p97

KEV

—

Exploit Today

29

0-100

Published: Jun 9, 2026 · Last modified: Jul 23, 2026 · CWE-122 · CWE-416

EPSS · 30d

1.0%EPSS · 30 days15.5%

2026-10-042026-10-31

Technical description

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Official references

msrc.microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45657

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-1203377.3 HIG

———A vulnerability was determined in VStarcam O-KAM SuperIPCam 1.3.3.32. Affected by this issue is the function FUN_005a2d44 of the file SuperIPCam.exe of the component P2P Session Teardown. This manipulation causes use after free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.7h CVE-2026-20591—

———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-9546.8h CVE-2026-20583—

———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-9747.8h CVE-2026-20581—

———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-9750.8h CVE-2026-20580—

———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: ALPS11412004; Issue ID: MSV-9752.8h CVE-2026-20570—

———In adsp, there is a possible escalation of privilege 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: ALPS11431474; Issue ID: MSV-9926.8h