CVE-2018-8611
HIGHCISA KEVEPSS 90th pctlDescription
An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
How to fix
Actively exploited, no published fix found yet
CISA required action: Apply updates per vendor instructions.
Federal remediation due: 2022-06-14
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 90% of all known CVEs.
Microsoft Windows Kernel Privilege Escalation Vulnerability
A privilege escalation vulnerability exists when the Windows kernel fails to properly handle objects in memory.
Apply updates per vendor instructions.
Remediation due: 2022-06-14
References
Related Vulnerabilities
Other CWE-404 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-44267 | Medium | 6.5 | 77% | - | Fix |
| CVE-2018-8120 | High | 7.0 | 74% | KEV + Ransom | - |
| CVE-2018-8210 | High | 7.8 | 24% | - | - |
| CVE-2018-8639 | High | 7.8 | 22% | KEV + Ransom | - |
| CVE-2023-3206 | Medium | 5.3 | 19% | - | - |
| CVE-2018-8450 | High | 8.8 | 16% | - | - |
Common questions
How do I fix CVE-2018-8611?
No published fix for CVE-2018-8611 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-06-14. Apply the vendor's mitigations per CISA's guidance.
Is CVE-2018-8611 being actively exploited?
Yes. CVE-2018-8611 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2022-06-14. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2018-8611?
CVE-2018-8611 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-29.