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    CVE-2026-45591

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

    Published:Jun 9, 2026
    Last Modified:Jun 10, 2026
    EPS:Jun 9, 2026
    EPSS Score:0.01663
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    .net
    Vendor
    Microsoft
    Product
    Asp.net Core
    Vendor
    Microsoft
    Product
    Visual Studio 2026
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Hummingbird

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-71328 (CVSS 8.8) — Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.…
    CVE-2026-69304 (CVSS 5.9) — Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attack…
    CVE-2026-69439 (CVSS 8.8) — Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges ove…
    CVE-2026-69522 (CVSS 8.8) — Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.…
    CVE-2026-58649 (CVSS 6.5) — Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.…
    CVE-2026-69806 (CVSS 7) — Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate pr…
    CVE-2026-62898 (CVSS 7.5) — Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.…
    CVE-2026-70354 (CVSS 7.8) — Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.…
    CVE-2026-65810 (CVSS 7.8) — Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.…
    CVE-2026-62886 (CVSS 7.8) — Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.…

    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High