CVE-2026-47300: CWE-303: Incorrect Implementation of Authentication Algorithm in Microsoft .NET 10.0
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-303) in Microsoft .NET 10.0's ASP.NET Core component arises from an incorrect implementation of the authentication algorithm. It enables an attacker with some level of authorization to escalate their privileges remotely. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability remotely to elevate privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300 to remediate this issue.
CVE-2026-47300: CWE-303: Incorrect Implementation of Authentication Algorithm in Microsoft .NET 10.0
Description
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-303) in Microsoft .NET 10.0's ASP.NET Core component arises from an incorrect implementation of the authentication algorithm. It enables an attacker with some level of authorization to escalate their privileges remotely. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability remotely to elevate privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-18T23:53:33.897Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300","vendor":"Microsoft"}]
Threat ID: 6a56811c68715ace43005273
Added to database: 07/14/2026, 18:34:04 UTC
Last enriched: 08/13/2026, 14:17:04 UTC
Last updated: 08/27/2026, 22:52:11 UTC
Views: 157
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