CVE-2026-45591
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
2.5%
83.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-770
Published 2026-06-09 · modified 2026-07-23
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-06-09 — Published (NVD)
- 2026-07-23 — Last modified (NVD)
Description
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Affected
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591
- 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