Overview
A privilege escalation vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited this vulnerability could run remote code in the security context of the local system.
https://nvd.nist.gov/vuln/detail/CVE-2018-8589
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2018-8589 |
| Vendor / Product | Microsoft — Win32k |
| NVD Published | 2018-11-14 |
| NVD Last Modified | 2025-10-28 |
| CVSS 3.1 Score | 7.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Severity | HIGH |
| CISA KEV Added | 2022-05-23 |
| CISA KEV Deadline | 2022-06-13 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2022-06-13.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2022-05-23 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2022-06-13 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2018-8589 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |