VulnerabilityModified
CVE-2026-45591
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
HIGH 7.5EPSS 2.48%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.48% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- microsoft/asp.net core · microsoft/visual studio 2026 · microsoft/.net
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:17527
- https://access.redhat.com/errata/RHSA-2026:25110
- https://access.redhat.com/errata/RHSA-2026:25111
- https://access.redhat.com/errata/RHSA-2026:25112
- https://access.redhat.com/errata/RHSA-2026:25113
- https://access.redhat.com/errata/RHSA-2026:25114
- https://access.redhat.com/errata/RHSA-2026:25115
- https://access.redhat.com/errata/RHSA-2026:25220
- https://access.redhat.com/errata/RHSA-2026:25221
- https://access.redhat.com/errata/RHSA-2026:25222
- https://access.redhat.com/errata/RHSA-2026:26638
- https://access.redhat.com/errata/RHSA-2026:26994
- https://access.redhat.com/errata/RHSA-2026:28007
- https://access.redhat.com/errata/RHSA-2026:28009
- https://access.redhat.com/errata/RHSA-2026:28011
- https://access.redhat.com/errata/RHSA-2026:28051
- https://access.redhat.com/errata/RHSA-2026:28227
- https://access.redhat.com/security/cve/CVE-2026-45591
- https://bugzilla.redhat.com/show_bug.cgi?id=2487224
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45591.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.