Description
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Affected products
microsoft: visual studio 2022; microsoft: visual studio 2026; microsoft: .net framework; microsoft: windows 10 1607; microsoft: windows server 2012; microsoft: windows server 2016; microsoft: windows 10 21h2; microsoft: windows 10 22h2; microsoft: windows 11 22h2; microsoft: windows 11 23h2; microsoft: windows 11 24h2; microsoft: windows 11 25h2; microsoft: windows 11 26h1; microsoft: windows server 2022; microsoft: windows server 2025
References4
Metrics
- CVSS 3.1
-
7.3
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L - EPSS — exploit probability
- 1% percentile: 51 · as of 14 November 2026
- CWE
- CWE-20CWE-122CWE-787
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.