CVE-2026-40376: CWE-20: Improper Input Validation in Microsoft Visual Studio Code
Improper input validation in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-40376) in Microsoft Visual Studio Code is due to improper input validation (CWE-20). It enables an attacker without privileges to elevate their privileges remotely, impacting confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.5, reflecting high severity with network attack vector, high attack complexity, no privileges required, and user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an unauthorized attacker to elevate privileges remotely, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40376 for detailed remediation instructions.
CVE-2026-40376: CWE-20: Improper Input Validation in Microsoft Visual Studio Code
Description
Improper input validation in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-40376) in Microsoft Visual Studio Code is due to improper input validation (CWE-20). It enables an attacker without privileges to elevate their privileges remotely, impacting confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.5, reflecting high severity with network attack vector, high attack complexity, no privileges required, and user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an unauthorized attacker to elevate privileges remotely, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40376 for detailed remediation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-11T23:06:15.615Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40376","vendor":"Microsoft"}]
Threat ID: 6a284cb78dd33fbd85664080
Added to database: 6/9/2026, 5:26:15 PM
Last enriched: 6/9/2026, 11:26:24 PM
Last updated: 6/10/2026, 5:41:19 AM
Views: 7
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