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CVE-2026-40372Published

ASP.NET Core Elevation of Privilege Vulnerability

Recorded JSON

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

CVE-2026-40372

No KEV entry is attached to this observation; this is not evidence that exploitation is absent.

FIRST EPSS: 11.20 % · percentile 95.93 % · scored 25 Oct 2026.

Observed 25 Oct 2026 15:18:41 UTC · Complete immutable risk JSON

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

CVE-2026-40372 · 25 Oct 2026 15:18:41 UTC

CVE-2026-40372 · 25 Oct 2026 02:24:38 UTC

CVE-2026-40372 · 23 Oct 2026 16:01:26 UTC

Immutable source observations

3 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

25 Oct 2026 09:17:30 UTC

Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

nvd · CVE-2026-40372 · Published

23 Oct 2026 16:01:25 UTC

Microsoft Security Advisory CVE-2026-40372 – ASP.NET Core Elevation of Privilege

osv · GHSA-9mv3-2cwr-p262 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 25 Oct 22:07 UTC · 271 of 271 readable · 269 fully read · documentation 464/464 current

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