.NET Denial of Service Vulnerability
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely CVE-2026-118747 · score 7.5/10
What could go wrong?
An attacker could make a program or service crash or stop responding.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
System.Formats.Cbor, System.Formats.Cbor on .NET 8.0, System.Formats.Cbor on .NET 10.0, System.Formats.Cbor on .NET 11.0
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: no KB article listed. Official page.