CVE-2026-49787: CWE-770: Allocation of Resources Without Limits or Throttling in Microsoft Windows 10 Version 1607
CVE-2026-49787 is a high-severity vulnerability in Windows 10 Version 1607 involving allocation of resources without limits or throttling in the HTTP.sys component. This flaw allows an unauthorized attacker to cause a denial of service (DoS) over the network by exhausting system resources. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49787) affects Windows 10 Version 1607 (build 10.0.14393.0) and is classified under CWE-770, which involves allocation of resources without limits or throttling. The flaw exists in the Windows HTTP.sys driver, which improperly manages resource allocation, enabling an unauthenticated attacker to trigger a denial of service condition remotely. The CVSS v3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation results in denial of service by exhausting resources in the HTTP.sys component, causing system unavailability. There is no impact on confidentiality or integrity. The vulnerability can be exploited remotely without authentication or user interaction.
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-2026-49787 to remediate this vulnerability.
CVE-2026-49787: CWE-770: Allocation of Resources Without Limits or Throttling in Microsoft Windows 10 Version 1607
Description
CVE-2026-49787 is a high-severity vulnerability in Windows 10 Version 1607 involving allocation of resources without limits or throttling in the HTTP.sys component. This flaw allows an unauthorized attacker to cause a denial of service (DoS) over the network by exhausting system resources. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49787) affects Windows 10 Version 1607 (build 10.0.14393.0) and is classified under CWE-770, which involves allocation of resources without limits or throttling. The flaw exists in the Windows HTTP.sys driver, which improperly manages resource allocation, enabling an unauthenticated attacker to trigger a denial of service condition remotely. The CVSS v3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation results in denial of service by exhausting resources in the HTTP.sys component, causing system unavailability. There is no impact on confidentiality or integrity. The vulnerability can be exploited remotely without authentication or user interaction.
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-2026-49787 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.207Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49787","vendor":"Microsoft"}]
Threat ID: 6a566f6d68715ace43e6b533
Added to database: 07/14/2026, 17:18:37 UTC
Last enriched: 07/15/2026, 01:48:02 UTC
Last updated: 07/15/2026, 03:33:47 UTC
Views: 8
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