What is CVE-2023-21687?

CVE-2023-21687 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. HTTP.sys Information Disclosure Vulnerability

Which CVE IDs does CVE-2023-21687 cover?

CVE-2023-21687 covers the following CVE IDs: CVE-2023-21687. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2023-21687?

CVE-2023-21687 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2023-21687?

CVE-2023-21687 affects 6 products, including: Windows 11 Version 22H2 for ARM64-based Systems; Windows 11 Version 22H2 for x64-based Systems; Windows 11 version 21H2 for ARM64-based Systems; Windows 11 version 21H2 for x64-based Systems; Windows Server 2022; and others — see the full list on the advisory page.

CVE-2023-21687HighCVSS 5.5

HTTP.sys Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

February 14, 2023

Last Modified

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🔗 CVE IDs covered (1)

CVE-2023-21687 →

📋 Description

What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is the contents of Kernel memory. An attacker could read the contents of Kernel memory from a user mode process.

🎯 Affected products6

Windows 11 Version 22H2 for ARM64-based Systems
Windows 11 Version 22H2 for x64-based Systems
Windows 11 version 21H2 for ARM64-based Systems
Windows 11 version 21H2 for x64-based Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)

✅ Remediation

KB5022842 (Security Update) — fixed build 10.0.20348.1547 KB5022921 (Security Hotpatch Update) — fixed build 10.0.20348.1540 KB5022836 (Security Update) — fixed build 10.0.22621.1574 KB5022845 (Security Update) — fixed build 10.0.22621.1265

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products6

✅ Remediation

🔗 References (8)