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Home / Vulnerability Intelligence / CVE-2026-40372

CVE-2026-40372 - Vulnerability Analysis

CriticalCVSS: 9.1

Last Updated: April 21, 2026

ASP.NET Core - Authentication Bypass

Published: April 21, 2026Updated: April 21, 2026Remote Exploitable

Overview

ASP.NET Core contains a broken authentication caused by improper verification of cryptographic signature, letting unauthorized attackers elevate privileges over a network, exploit requires network access.

Severity & Score

Severity: Critical
CVSS Score: 9.1
EPSS Score: 0.0%(Probability of exploitation in next 30 days)

Impact

Unauthorized attackers can elevate privileges over the network, potentially gaining unauthorized access or control.

Mitigation

Update to the latest version of ASP.NET Core.

References

Social Media Activity(2 posts)

TheHackerWire
TheHackerWire
@thehackerwire
Apr 21, 2026

šŸ”“ CVE-2026-40372 - Critical (9.1) Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network. šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-40372/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post
TheHackerWire
TheHackerWire
@thehackerwire
Apr 21, 2026

šŸ”“ CVE-2026-40372 - Critical (9.1) Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network. šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-40372/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post

Related Resources

Details

CVE ID
CVE-2026-40372
Severity
Critical
CVSS Score
9.1
Type
broken_authentication
Status
new
EPSS
0.0%
Social Posts
2

CWE

  • CWE-347

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Score

0.0%Probability of exploitation in the next 30 days