← Vulnerability feed

Vulnerability record · CVE-2026-26171 · published 14 April 2026

CVE-2026-26171: Microsoft .net uncontrolled resource consumption vulnerability

Microsoft · .Net

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.

7.5 CVSS 3.1 High EPSS 2.3% · top 17.7% CWE-400 · Uncontrolled resource consumptionCWE-611 · XML external entity (XXE)
7.5CVSS 3.1 base score
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
21References
15 Jul 2026Last modified by NVD

Description

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:13280
https://access.redhat.com/errata/RHSA-2026:13281
https://access.redhat.com/errata/RHSA-2026:13282
https://access.redhat.com/errata/RHSA-2026:13283
https://access.redhat.com/errata/RHSA-2026:13693
https://access.redhat.com/errata/RHSA-2026:8467
https://access.redhat.com/errata/RHSA-2026:8468
https://access.redhat.com/errata/RHSA-2026:8469
https://access.redhat.com/errata/RHSA-2026:8470
https://access.redhat.com/errata/RHSA-2026:8471
https://access.redhat.com/errata/RHSA-2026:8472
https://access.redhat.com/errata/RHSA-2026:8473
https://access.redhat.com/errata/RHSA-2026:8474
https://access.redhat.com/errata/RHSA-2026:8475
https://access.redhat.com/errata/RHSA-2026:9077
https://access.redhat.com/errata/RHSA-2026:9080
https://access.redhat.com/errata/RHSA-2026:9205
https://access.redhat.com/security/cve/CVE-2026-26171
https://bugzilla.redhat.com/show_bug.cgi?id=2457739
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26171.json

Track CVE-2026-26171 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed7.5CVE-2023-38180Microsoft .NET and Visual Studio uncontrolled resource consumption DoSCVE-2023-38180 is a denial-of-service flaw in Microsoft .NET, ASP.NET Core and Visual Studio 2022, classified as uncontrolled resource consumption (C…KEVEPSS 14%analysed9.8CVE-2026-47304Microsoft .net framework insufficient verification of data authenticity vulnerabilityImproper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.EPSS 0.29%9.8CVE-2024-43498Microsoft .net type confusion vulnerability.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 3.6%9.8CVE-2024-0057Microsoft powershell improper input validation vulnerabilityNET, .NET Framework, and Visual Studio Security Feature Bypass VulnerabilityEPSS 2.8%9.8CVE-2023-36049Microsoft .net framework improper input validation vulnerability.NET, .NET Framework, and Visual Studio Elevation of Privilege VulnerabilityEPSS 13%9.8CVE-2018-8327Microsoft powershell vulnerabilityA remote code execution vulnerability exists in PowerShell Editor Services, aka "PowerShell Editor Services Remote Code Execution Vulnerability." Thi…EPSS 22%8.8CVE-2026-71328Microsoft visual studio 2022 heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.EPSS 0.76%

Source: NIST National Vulnerability Database (record CVE-2026-26171), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.