CVE-2026-88233

HIGH

Published Nov 10, 2026 Modified Nov 11, 2026 CWE-283

Description

Improper authorization in Windows Task Scheduler allows an authorized attacker to elevate privileges locally.

Is your site exposed to CVE-2026-88233?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-283 CWE-283

References

Other References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88233

Frequently Asked Questions

What is CVE-2026-88233? +

Improper authorization in Windows Task Scheduler allows an authorized attacker to elevate privileges locally. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-88233? +

CVE-2026-88233 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2026-88233? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-29940

Unverified ownership in Secure Encrypted Virtualization (SEV) firmware could allow a privileged attacker with access to a malicious hypervisor to …

CVE-2026-93853

Unverified ownership in Barman snapshot backup deletion allows a principal who can write the backup catalog to cause Barman to …

CVE-2024-27903 9.8

OpenVPN plug-ins on Windows with OpenVPN 2.6.9 and earlier could be loaded from any directory, which allows an attacker to …

CVE-2026-85781 8.7

Unverified ownership of a storage access point in the volume deletion component of the Amazon EFS CSI Driver before v3.4.1 …

CVE-2026-83791 7.8

Improper authorization in Windows Virtual Input allows an authorized attacker to elevate privileges locally.

CVE-2025-43882 7.8

Dell ThinOS 10, versions prior to 2508_10.0127, contains an Unverified Ownership vulnerability. A local low-privileged attacker could potentially exploit this …