Medium 4.8Published Oct 14, 2025

CVE-2025-55248.NET, .NET Framework, and Visual Studio Information Disclosure Vulnerability

Updated under an hour ago (Oct 27, 2026, 12:40 AM ET)

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It affects Microsoft .NET 8.0 and 17 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Microsoft .NET 8.0

Exploited in the last 30 days

Inadequate encryption strength in .NET, .NET Framework, Visual Studio allows an authorized attacker to disclose information over a network.

CVSS: 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Weakness (CWE): CWE-326
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Feb 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft .NET 8.0 microsoft:net_8.0 (from the name)	from 8.0.0 before 8.0.21	CNA record
Microsoft .NET 9.0 microsoft:net_9.0 (from the name)	from 9.0.0 before 9.0.10	CNA record
Microsoft Microsoft .NET Framework 2.0 Service Pack 2 microsoft:net_framework_2.0_service_pack_2 (from the name)	from 2.0.0 before 2.0.50727.8981	CNA record
Microsoft Microsoft .NET Framework 3.0 Service Pack 2 microsoft:net_framework_3.0_service_pack_2 (from the name)	3.0.0 builds before 2.0.50727.8981	CNA record
Microsoft Microsoft .NET Framework 3.5 microsoft:net_framework_3.5 (from the name)	3.5.0 builds before 2.0.50727.8981	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 microsoft:net_framework_3.5_and_4.7.2 (from the name)	from 4.7.0 before 4.7.04137.03	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.8 microsoft:net_framework_3.5_and_4.8 (from the name)	from 4.8.0 before 4.8.04798.02	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 microsoft:net_framework_3.5_and_4.8.1 (from the name)	from 4.8.1 before 4.8.1.09320.02	CNA record
Microsoft Microsoft .NET Framework 3.5.1 microsoft:net_framework_3.5.1 (from the name)	3.5.0 builds before 2.0.50727.8981	CNA record
Microsoft Microsoft .NET Framework 4.6.2 microsoft:net_framework_4.6.2 (from the name)	from 4.7.0 before 4.7.04137.03	CNA record
1–10 of 18

References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55248	vendor-advisory, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.