SecuriTricks - CVE-2026-8501

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.

Product(s) Impacted

Vendor	Product	Versions
Pc Tools	Internet Security Driver	* pctcore64.sys

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-782

Exposed IOCTL with Insufficient Access Control

The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	pc_tools	internet_security	/	/	/	/	/	/	/	/
a	pc_tools	driver	pctcore64.sys	/	/	/	/	/	/	/

References

https://kb.cert.org/vuls/id/158530

https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/design/microsoft-recommended-driver-block-rules

https://learn.microsoft.com/en-us/windows/win32/secauthz/security-descriptor-definition-language

https://www.kb.cert.org/vuls/id/158530

CVSS Score

7.8 / 10

CVSS Data - 3.1

Attack Vector: LOCAL
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH

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

View Vector String

Timeline

Published: June 1, 2026, 5:17 p.m.
Last Modified: June 1, 2026, 9:16 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-8501