Inadequate Encryption Strength in Microsoft products - CVE-2025-55248

Vulnerability identifier: #VU117231

CSH Severity: Medium

CVSS v4: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N]

CVE-ID: CVE-2025-55248

CWE-ID: CWE-326

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to inadequate encryption strength. A remote attacker can trick the victim to open a specially crafted email or click on the link and gain access to personally identifiable information (PII).

Microsoft .NET Framework
.NET
.NET for macOS
.NET for Linux
Visual Studio
Tenable Identity Exposure (formerly Tenable.ad)
Red Hat OpenShift Dev Spaces
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
dotnet10 (Ubuntu package)
dotnet8.0 (Red Hat package)
dotnet9.0 (Red Hat package)

Install updates from vendor's website.

Microsoft .NET Framework - addressed in versions 2.0.50727.8981 2.0.50727.8981, 4.7.04137.03 4.7.04137.03, 4.7.04137.06 4.7.04137.06, 4.8.1.09320.02 4.8.1.09320.02, 4.8.1.09321.01 4.8.1.09321.01, 4.8.04798.02 4.8.04798.02, 4.8.04798.04 4.8.04798.04, 10.0.14393.8519 10.0.14393.8519
.NET - addressed in versions 8.0.21, 9.0.10
.NET for macOS - addressed in versions 8.0.21 8.0.21, 9.0.10 9.0.10
.NET for Linux - addressed in versions 8.0.21 8.0.21, 9.0.10 9.0.10
Visual Studio - addressed in versions 17.10.20 17.10.20, 17.12.13 17.12.13
Tenable Identity Exposure (formerly Tenable.ad) - addressed in versions 3.77.14, 3.93.4
Red Hat OpenShift Dev Spaces - update to 3.25.0
dotnet10 (Ubuntu package) - addressed in versions 8.0.21-0ubuntu1~22.04.1, 8.0.21-0ubuntu1~24.04.1, 8.0.21-0ubuntu1~25.04.1, 8.0.21-0ubuntu1~25.10.1, 8.0.121-0ubuntu1~22.04.1, 8.0.121-0ubuntu1~24.04.1, 8.0.121-0ubuntu1~25.04.1, 8.0.121-0ubuntu1~25.10.1, 8.0.121-8.0.21-0ubuntu1~22.04.1, 8.0.121-8.0.21-0ubuntu1~24.04.1, 8.0.121-8.0.21-0ubuntu1~25.04.1, 8.0.121-8.0.21-0ubuntu1~25.10.1, 9.0.10-0ubuntu1~25.04.1, 9.0.10-0ubuntu1~25.10.1, 9.0.111-0ubuntu1~25.04.1, 9.0.111-0ubuntu1~25.10.1, 9.0.111-9.0.10-0ubuntu1~25.04.1, 9.0.111-9.0.10-0ubuntu1~25.10.1, 10.0.0~rc2-0ubuntu1~25.10.2, 10.0.100~rc2-0ubuntu1~25.10.2, 10.0.100-10.0.0~rc2-0ubuntu1~25.10.2
dotnet8.0 (Red Hat package) - addressed in versions 8.0.121-1.el8_10, 8.0.121-1.el9_4, 8.0.121-1.el9_6, 8.0.121-1.el10_0
dotnet9.0 (Red Hat package) - addressed in versions 9.0.111-1.el8_10, 9.0.111-1.el9_6, 9.0.111-1.el10_0

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55248

• Information disclosure in .NET, .NET Framework, and Visual Studio
• Red Hat Enterprise Linux 8 update for .NET 8.0
• Red Hat Enterprise Linux 9 update for .NET 8.0
• Red Hat Enterprise Linux 9 update for .NET 8.0
• Ubuntu update for dotnet10
• Tenable Identity Exposure update for third-party components
• Red Hat Enterprise Linux 10 update for .NET 8.0
• Red Hat Enterprise Linux 10 update for .NET 9.0
• Red Hat Enterprise Linux 8 update for .NET 9.0
• Red Hat Enterprise Linux 9 update for .NET 9.0
• Tenable Identity Exposure 3.77 update for third-party components
• Multiple vulnerabilities in Red Hat OpenShift Dev Spaces