Description
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
Affected products
microsoft: .net framework; microsoft: windows 11 26h1; microsoft: windows 10 1809; microsoft: visual studio 2022; microsoft: visual studio 2026; microsoft: .net; microsoft: windows
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62897 PatchVendor Advisory
Metrics
- CVSS 3.1
-
7.0
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 12 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.