CVE-2026-40372
Published:April 21, 2026
Updated:April 26, 2026
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Affected Packages
Microsoft.AspNetCore.DataProtection (DOT_NET):
Affected version(s) >=10.0.0 <10.0.7Fix Suggestion:
Update to version 10.0.7microsoft.aspnetcore.dataprotection (NUGET):
Affected version(s) >=10.0.0 <10.0.7Fix Suggestion:
Update to version 10.0.7Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Exploit Maturity
UNPROVEN
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
EPSS
Base Score:
0.03
