High severity · published Oct 14, 2025
CVE-2025-55247
.NET Elevation of Privilege Vulnerability
7.3
CVSS
0.6%
EPSS
No
On KEV
Description
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
.NET 8.0 · Microsoft
8.0.0 before 8.0.21 · source: vendor
N9
.NET 9.0 · Microsoft
9.0.0 before 9.0.10 · source: vendor
NE
.net · Microsoft
8.0.0 before 8.0.21; 9.0.0 before 9.0.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55247
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55247
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55247
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