Critical
ASP.NET Core Elevation of Privilege Vulnerability
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Announced Source revision 1
Original source ↗CVE-2026-40372
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-40372
ASP.NET Core 10.0
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Microsoft Visual Studio 2026 version 18.5
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Microsoft",
"product": "ASP.NET Core 10.0",
"versions": [
{
"status": "affected",
"version": "10.0",
"lessThan": "10.0.7",
"versionType": "custom"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2026 version 18.5",
"versions": [
{
"status": "affected",
"version": "18.5.0",
"lessThan": "18.5.2",
"versionType": "custom"
}
]
}
]- Related CVEs
- CVE-2026-40372
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #29247 · Revision 1
- Added to Heist Feed
- Publisher date