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TI-2023-17641 Aliases CVE-2023-35298GHSA-3wg4-9v5r-3g2h

HTTP.sys Denial of Service Vulnerability

Priority MEDIUM 42CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

HTTP.sys Denial of Service Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01778 78th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.185010.0.20348.1850Patch availableCNA
MicrosoftWindows 11 version 21H210.0.0 to before 10.0.22000.217610.0.22000.2176Patch availableCNA
MicrosoftWindows 11 version 22H210.0.22621.0 to before 10.0.22621.199210.0.22621.1992Patch availableCNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.1850 Fixed in 10.0.20348.1850 Patch available CNA
  • Windows 11 version 21H2 VendorMicrosoft Affected 10.0.0 to before 10.0.22000.2176 Fixed in 10.0.22000.2176 Patch available CNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.1992 Fixed in 10.0.22621.1992 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*before 10.0.22000.2176VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*before 10.0.22621.1992VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:* Versions before 10.0.22000.2176 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* Versions before 10.0.22621.1992 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft 3 updates

  • KB5028185
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.1992
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.1992
  • KB5028182
    Security Update
    • Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.2176
    • Windows 11 version 21H2 for x64-based Systems 10.0.22000.2176
  • KB5028171
    Security Update
    • Windows Server 2022 10.0.20348.1850
    • Windows Server 2022 (Server Core installation) 10.0.20348.1850

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Denial of Service
Exploited
No
Publicly disclosed
—
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-35298
  2. 2026-10-03 Alias added: GHSA-3wg4-9v5r-3g2h

References

Patch 1

  • TI-2024-29106 Windows MSHTML Platform Spoofing Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19802 Windows MSHTML Platform Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19751 SmartScreen Prompt Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2023-18080 Windows SmartScreen Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2023-15353 Windows SmartScreen Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2023-08061 Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1000 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences