CVE-2026-42899
ASP.NET Core Denial of Service Vulnerability
CVSS Score
7.5
EPSS Score
2.4%
EPSS Percentile
83th
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
| Vendor | microsoft |
| Product | .net 10.0 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | May 12, 2026 |
| Last Updated | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / .NET 10.0
10.0.0 < 10.0.8
Microsoft / .NET 8.0
8.0.0 < 8.0.27
Microsoft / .NET 9.0
9.0.0 < 9.0.16
References
msrc.microsoft.com: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-42899 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2476605 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42899.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24332 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24333 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22145 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21286 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21754 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21295 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21291 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21294 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24334 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24335 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24336 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21297 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21293 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21296 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:17464 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:17682 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:17527