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CVE-2026-40372
CRITICAL9.1
Description
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
CVE Details
CVSS v3.1 Score9.1
SeverityCRITICAL
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published4/21/2026
Last Modified4/22/2026
Sourcenvd
Honeypot Sightings0
Weaknesses (CWE)
CWE-347
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40372(secure@microsoft.com)
IOC Correlations
No correlations recorded
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