Medium severity · published Oct 13, 2026
CVE-2026-70194
.NET Framework Security Feature Bypass Vulnerability
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N1
.NET 11.0 runtime · Microsoft
11.0.0 before 11.0.0-rc.2 · source: vendor
MV
Microsoft Visual Studio 2022 version 17.14 · Microsoft
17.14.0 before 17.14.42 · source: vendor
MV
Microsoft Visual Studio 2026 version 18.10 · Microsoft
18.10.0 before 18.10.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-70194
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-70194
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70194
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