CVE-2018-8637: An information disclosure vulnerability exists in Windows kernel that could allow an attacker to retrieve information…
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 1 public report, the first from .
- How likely is exploitation in the next 30 days?
- 1.8%
EPSS score, percentile 79 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- Not scored
The CVE record carries no CVSS score.
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- version 1803 (Server Core Installation)
- Version 1803 for 32-bit Systems
- Version 1803 for ARM64-based Systems
- Version 1803 for x64-based Systems
- Version 1809 for 32-bit Systems
- Version 1809 for ARM64-based Systems
and 2 more in the table below
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
An information disclosure vulnerability exists in Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass, aka "Win32k Information Disclosure Vulnerability." This affects Windows 10 Servers, Windows 10, Windows Server 2019.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (3 products)
| Status | Versions |
|---|---|
| Affected | version 1803 (Server Core Installation) |
| Status | Versions |
|---|---|
| Affected | Version 1803 for 32-bit Systems |
| Affected | Version 1803 for ARM64-based Systems |
| Affected | Version 1803 for x64-based Systems |
| Affected | Version 1809 for 32-bit Systems |
| Affected | Version 1809 for ARM64-based Systems |
| Affected | Version 1809 for x64-based Systems |
| Status | Versions |
|---|---|
| Affected | (Server Core installation) |
Source: CVE List, as of . About the data.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
2
Known exploited Microsoft vulnerabilities
- CVE-2026-96951: Microsoft Windows Command Injection Vulnerability
- CVE-2026-65660: Microsoft SharePoint Code Injection Vulnerability
- CVE-2026-81963: Microsoft Windows Link Following Vulnerability
- CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability
- CVE-2019-1068: Microsoft SQL Server Remote Code Execution Vulnerability