CVE-2026-47291: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 1607
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow or wraparound in the Windows HTTP.sys driver on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution by an unauthenticated attacker over the network. The vulnerability is tracked as CVE-2026-47291 with a CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could result in complete compromise of the affected system, including unauthorized remote code execution with high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47291 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
CVE-2026-47291: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 1607
Description
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow or wraparound in the Windows HTTP.sys driver on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution by an unauthenticated attacker over the network. The vulnerability is tracked as CVE-2026-47291 with a CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could result in complete compromise of the affected system, including unauthorized remote code execution with high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47291 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-18T23:53:33.896Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47291","vendor":"Microsoft"}]
Threat ID: 6a284cec8dd33fbd85664fb7
Added to database: 06/09/2026, 17:27:08 UTC
Last enriched: 07/29/2026, 22:04:27 UTC
Last updated: 07/31/2026, 19:30:14 UTC
Views: 111
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