CVE-2026-62899: CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Microsoft .NET 10.0
Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62899) in Microsoft .NET 10.0 is categorized under CWE-444, which involves inconsistent interpretation of HTTP requests leading to HTTP Request/Response Smuggling. The flaw enables an attacker to bypass security features remotely without authentication. The CVSS v3.1 base score is 5.9, reflecting medium severity with network attack vector, high attack complexity, no privileges required, and no user interaction. Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker can bypass security features remotely by exploiting inconsistent HTTP request parsing in .NET 10.0. The vulnerability does not allow integrity or availability impact but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users should apply the provided patch from the Microsoft Security Response Center advisory to remediate the issue. No additional mitigation steps are indicated by the vendor.
CVE-2026-62899: CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Microsoft .NET 10.0
Description
Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVSS v3.1
Score 5.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-62899) in Microsoft .NET 10.0 is categorized under CWE-444, which involves inconsistent interpretation of HTTP requests leading to HTTP Request/Response Smuggling. The flaw enables an attacker to bypass security features remotely without authentication. The CVSS v3.1 base score is 5.9, reflecting medium severity with network attack vector, high attack complexity, no privileges required, and no user interaction. Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker can bypass security features remotely by exploiting inconsistent HTTP request parsing in .NET 10.0. The vulnerability does not allow integrity or availability impact but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users should apply the provided patch from the Microsoft Security Response Center advisory to remediate the issue. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:25:21.035Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62899","vendor":"Microsoft"}]
Threat ID: 6a7b5823bf8831d5391561f0
Added to database: 08/11/2026, 17:13:07 UTC
Last enriched: 08/11/2026, 20:57:44 UTC
Last updated: 08/12/2026, 01:41:17 UTC
Views: 5
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