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Vulnerability record · CVE-2026-8501 · published 1 June 2026

CVE-2026-8501: Improper access control in the PCTCore64.sys Windows kernel driver from PC Tools Internet Security allows user…

Improper access control in the PCTCore64.sys Windows kernel driver from PC Tools Internet Security allows user-mode processes to access the PCTCoreDriver WDM device interface and invoke privileged IOCTL handlers. A local attacker with the ability to access or load the affected driver can exploit this vulnerability to perform sensitive and privileged operations on the target system.

7.8 CVSS 3.1 High EPSS 0.19% · top 92.7% CWE-782 · CWE-782 Awaiting Analysis
7.8CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
22 Jul 2026Last modified by NVD

Description

Improper access control in the PCTCore64.sys Windows kernel driver from PC Tools Internet Security allows user-mode processes to access the PCTCoreDriver WDM device interface and invoke privileged IOCTL handlers. A local attacker with the ability to access or load the affected driver can exploit this vulnerability to perform sensitive and privileged operations on the target system.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://kb.cert.org/vuls/id/158530
https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/des
https://learn.microsoft.com/en-us/windows/win32/secauthz/security-descriptor-definition-language
https://www.kb.cert.org/vuls/id/158530

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2021-21551Dell dbutil_2_3.sys driver insufficient access control privilege escalationThe Dell dbutil_2_3.sys driver contains insufficient access control that lets a local user reach privileged driver operations. It matters because the…KEVEPSS 79%analysed

Source: NIST National Vulnerability Database (record CVE-2026-8501), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.