High severity · published Aug 11, 2026
CVE-2026-62909
.NET Elevation of Privilege Vulnerability
7.8
CVSS
0.3%
EPSS
No
On KEV
Description
Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N1
.NET 10.0 · Microsoft
10.0.0 before 10.0.11 · source: vendor
N8
.NET 8.0 · Microsoft
8.0.0 before 8.0.30 · source: vendor
N9
.NET 9.0 · Microsoft
9.0.0 before 9.0.19 · source: vendor
MV
Microsoft Visual Studio 2022 version 17.14 · Microsoft
17.14.0 before 17.14.38 · source: vendor
MV
Microsoft Visual Studio 2026 version 18.8 · Microsoft
18.0 before 18.8.3 · source: vendor
NE
.net · Microsoft
8.0.0 before 8.0.30; 9.0.0 before 9.0.19; 10.0.0 before 10.0.11 · source: NVD
VS
Visual Studio 2022 · Microsoft
17.14.0 before 17.14.38 · source: NVD
VS
Visual Studio 2026 · Microsoft
18.8.0 before 18.8.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-62909
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-62909
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909
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