CVE-2026-33116 | .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.

Published: 2026-04-14 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-33116 is rated Moderate Risk (61.1/100): CVSS High severity, with high exploitation likelihood (EPSS 8.01%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-33116

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-30 9.18% 8.01% -1.17%
2 2026-05-26 1.88% 9.18% +7.30%
3 2026-05-25 — 1.88% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-33116

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2026-33116

GitHub Security Advisory for CVE-2026-33116

GHSA-37gx-xxp4-5rgx · Severity: high · Ecosystem: nuget — Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

OS Trackers for CVE-2026-33116

vendor priority summary link
alpine — CVE-2026-33116: 3 source package rows (dotnet10-runtime, dotnet8-runtime, dotnet9-runtime); 6 state rows across 2 repos (3.23-community, edge-community); fixed 6, open 0. https://security.alpinelinux.org/vuln/CVE-2026-33116
redhat high — https://access.redhat.com/security/cve/CVE-2026-33116
suse high CVE-2026-33116 severity important: SUSE including 79 source package names (aspnetcore-runtime-10.0-10.0.6-1.el8_10, aspnetcore-runtime-8.0-8.0.26-1.el10_1, …), 79 product×package rows across 3 product lines (SUSE Liberty Linux 10, SUSE Liberty Linux 8, SUSE Liberty Linux 9): Fixed 79. https://www.suse.com/security/cve/CVE-2026-33116/
ubuntu medium CVE-2026-33116 medium priority: Ubuntu including 5 source packages (dotnet10, dotnet6, dotnet7, dotnet8, dotnet9), 45 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 31, released 10, needs-triage 2, deferred 1, ignored 1. https://ubuntu.com/security/CVE-2026-33116

Affected software / configurations for CVE-2026-33116

Vendor Product Version Raw CPE
microsoft .net >= 10.0.0, < 10.0.6 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net >= 8.0.0, < 8.0.26 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net >= 9.0.0, < 9.0.15 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net_framework 3.5 cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
microsoft .net_framework 4.7.2 cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
microsoft .net_framework 4.6.2 cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
microsoft .net_framework 4.7 cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
microsoft .net_framework 4.7.1 cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
microsoft .net_framework 4.8 cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
microsoft .net_framework 4.8.1 cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*

References for CVE-2026-33116

cvelogic Threat Intelligence