High severity · published Apr 14, 2026
CVE-2026-33116
.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
CVSS
2.1%
EPSS
No
On KEV
Description
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N1
.NET 10.0 · Microsoft
10.0.0 before 10.0.6 · source: vendor
N8
.NET 8.0 · Microsoft
8.0 before 8.0.26; 8.0.0 before 8.0.26 · source: vendor
N9
.NET 9.0 · Microsoft
9.0.0 before 9.0.15 · source: vendor
MN
Microsoft .NET Framework 3.5 · Microsoft
3.5.0 before 2.0.50727.8982 & 3.0.30729.8976 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.7.2 · Microsoft
4.7.0 before 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.8 · Microsoft
4.8.0 before 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 · source: vendor
MN
Microsoft .NET Framework 3.5 AND 4.8.1 · Microsoft
4.8.1 before 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · source: vendor
MN
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 · Microsoft
4.7.0 before 4.8.4801.0 · source: vendor
MN
Microsoft .NET Framework 4.8 · Microsoft
4.8.0 before 4.8.4801.0 · source: vendor
NE
.net · Microsoft
10.0.0 before 10.0.6; 8.0.0 before 8.0.26; 9.0.0 before 9.0.15 · source: NVD
NF
.net Framework · Microsoft
3.5; 3.5; 4.7.2; 4.6.2; 4.7; 4.7.1; +6 more · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33116
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33116
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33116
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:13280
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:13281
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:13282
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:13283
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:13693
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