Medium severity · published Oct 14, 2025
CVE-2025-55248
.NET, .NET Framework, and Visual Studio Information Disclosure Vulnerability
5.7
CVSS
0.7%
EPSS
No
On KEV
Description
Inadequate encryption strength in .NET, .NET Framework, Visual Studio allows an authorized attacker to disclose information over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% 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
MN
Microsoft .NET Framework 2.0 Service Pack 2 · Microsoft
2.0.0 before 2.0.50727.8981 · source: vendor
MN
Microsoft .NET Framework 3.0 Service Pack 2 · Microsoft
3.0.0 before 2.0.50727.8981 · source: vendor
MN
Microsoft .NET Framework 3.5 · Microsoft
3.5.0 before 2.0.50727.8981 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.7.2 · Microsoft
4.7.0 before 4.7.04137.03 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.8 · Microsoft
4.8.0 before 4.8.04798.02 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.8.1 · Microsoft
4.8.1 before 4.8.1.09320.02 · source: vendor
MN
Microsoft .NET Framework 3.5.1 · Microsoft
3.5.0 before 2.0.50727.8981 · source: vendor
MN
Microsoft .NET Framework 4.6.2 · Microsoft
4.7.0 before 4.7.04137.03 · source: vendor
MN
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 · Microsoft
4.7.0 before 4.7.04137.03 · source: vendor
MN
Microsoft .NET Framework 4.8 · Microsoft
4.8.0 before 4.8.04798.02 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55248
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55248
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55248
More from .NET 8.0
8.8
CVE-2026-71328
.NET and Visual Studio Remote Code Execution Vulnerability
8.8
CVE-2026-69439
.NET and Visual Studio Elevation of Privilege Vulnerability
8.8
CVE-2026-69522
.NET and Visual Studio Remote Code Execution Vulnerability
8.8
CVE-2025-21176
.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability
8.1
CVE-2024-38229
.NET and Visual Studio Remote Code Execution Vulnerability