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CVE-2026-70159

HIGH 7.5

Published 2026-10-13 · Last modified 2026-10-25

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

ELEVATED IMPACT

Severe if exploited (CVSS 7.5), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

1.2%chance of exploitation in 30 days · 69th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.5CVSS 3.1 · HIGH

  • ConfidentialityNone
  • IntegrityNone
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Microsoft

Products Microsoft Visual Studio 2022 Version 17.14 Microsoft Visual Studio 2026 Version 18.10 Microsoft.Aspnetcore.Signalr.Common Microsoft.Aspnetcore.Signalr.Core

Weakness (CWE)

  • CWE-770: : Allocation of Resources Without Limits or Throttling

CVSS vector

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

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • Microsoft.AspNetCore.SignalR.Common NuGet

    pkg:nuget/Microsoft.AspNetCore.SignalR.Common

    ECOSYSTEM range
    • Introduced version (included): 10.0.0
    • Fixed boundary (excluded): 10.0.13
    13 explicitly listed affected versions

    10.0.0, 10.0.1, 10.0.10, 10.0.11, 10.0.12, 10.0.2, 10.0.3, 10.0.4, 10.0.5, 10.0.6, 10.0.7, 10.0.8, 10.0.9

    Additional upstream package constraints
    {
  "database": {
    "last_known_affected_version_range": "<= 10.0.12",
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-334f-vvp4-7g6p/GHSA-334f-vvp4-7g6p.json"
  }
}
    GitHub Advisory Database · GHSA-334f-vvp4-7g6p · Updated 2026-10-19T16:01:15.611560049Z
  • Microsoft.AspNetCore.SignalR.Common NuGet

    pkg:nuget/Microsoft.AspNetCore.SignalR.Common

    ECOSYSTEM range
    • Introduced version (included): 11.0.0-preview.5
    • Fixed boundary (excluded): 11.0.0-rc.2
    Additional upstream package constraints
    {
  "database": {
    "last_known_affected_version_range": "<= 11.0.0-rc.1",
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-334f-vvp4-7g6p/GHSA-334f-vvp4-7g6p.json"
  }
}
    GitHub Advisory Database · GHSA-334f-vvp4-7g6p · Updated 2026-10-19T16:01:15.611560049Z
  • Microsoft.AspNetCore.SignalR.Common NuGet

    pkg:nuget/Microsoft.AspNetCore.SignalR.Common

    ECOSYSTEM range
    • Introduced version (included): 8.0.0
    • Fixed boundary (excluded): 8.0.32
    31 explicitly listed affected versions

    8.0.0, 8.0.1, 8.0.10, 8.0.11, 8.0.12, 8.0.13, 8.0.14, 8.0.15, 8.0.16, 8.0.17, 8.0.18, 8.0.19, 8.0.2, 8.0.20, 8.0.21, 8.0.22, 8.0.23, 8.0.24, 8.0.25, 8.0.26, 8.0.27, 8.0.28, 8.0.29, 8.0.3, 8.0.30, 8.0.31, 8.0.4, 8.0.5, 8.0.6, 8.0.7, 8.0.8

    Additional upstream package constraints
    {
  "database": {
    "last_known_affected_version_range": "<= 8.0.31",
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-334f-vvp4-7g6p/GHSA-334f-vvp4-7g6p.json"
  }
}
    GitHub Advisory Database · GHSA-334f-vvp4-7g6p · Updated 2026-10-19T16:01:15.611560049Z
  • Microsoft.AspNetCore.SignalR.Common NuGet

    pkg:nuget/Microsoft.AspNetCore.SignalR.Common

    ECOSYSTEM range
    • Introduced version (included): 9.0.0
    • Fixed boundary (excluded): 9.0.21
    21 explicitly listed affected versions

    9.0.0, 9.0.1, 9.0.10, 9.0.11, 9.0.12, 9.0.13, 9.0.14, 9.0.15, 9.0.16, 9.0.17, 9.0.18, 9.0.19, 9.0.2, 9.0.20, 9.0.3, 9.0.4, 9.0.5, 9.0.6, 9.0.7, 9.0.8, 9.0.9

    Additional upstream package constraints
    {
  "database": {
    "last_known_affected_version_range": "<= 9.0.20",
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-334f-vvp4-7g6p/GHSA-334f-vvp4-7g6p.json"
  }
}
    GitHub Advisory Database · GHSA-334f-vvp4-7g6p · Updated 2026-10-19T16:01:15.611560049Z

Vendor product assessments

Showing 32 of 1399 vendor product statements; 1367 omitted. Read the full vendor advisory.

  • aspnetcore-runtime-8.0-0:8.0.32-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_0?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-sdk-8.0-0:8.0.132-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_0?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-apphost-pack-10.0-0:10.0.13-1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_2?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-sdk-10.0-0:10.0.113-1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_2?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-runtime-8.0-0:8.0.32-2.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_10?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-runtime-8.0-0:8.0.32-2.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_10?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-templates-8.0-0:8.0.132-2.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_10?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-sdk-dbg-8.0-0:8.0.132-1.el9_4.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_4?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet8.0-debugsource-0:8.0.132-1.el9_6.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-hostfxr-9.0-debuginfo-0:9.0.21-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_8?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-targeting-pack-9.0-0:9.0.21-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_8?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-sdk-aot-9.0-debuginfo-0:9.0.122-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_0?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-apphost-pack-10.0-debuginfo-0:10.0.13-1.el8_10.s390x as a component of Red Hat Enterprise Linux CRB (v. 8) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_10?arch=s390x

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-hostfxr-8.0-debuginfo-0:8.0.32-1.el9_6.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet10.0-debuginfo-0:10.0.113-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_8?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • netstandard-targeting-pack-2.1-0:9.0.122-0.1.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-runtime-10.0-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-runtime-10.0-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-runtime-dbg-10.0-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-runtime-dbg-10.0-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • aspnetcore-targeting-pack-10.0-0:10.0.13-1.hum1@s390x as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=s390x&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-apphost-pack-10.0-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-apphost-pack-10.0-0:10.0.13-1.hum1@s390x as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=s390x&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-host-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-host-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-hostfxr-10.0-0:10.0.13-1.hum1@s390x as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=s390x&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-hostfxr-10.0-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-runtime-10.0-0:10.0.13-1.hum1@s390x as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=s390x&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-runtime-dbg-10.0-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-runtime-dbg-10.0-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-targeting-pack-10.0-0:10.0.13-1.hum1@aarch64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00
  • dotnet-targeting-pack-10.0-0:10.0.13-1.hum1@x86_64 as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    Red Hat · CVE-2026-70159 · Updated 2026-10-23T04:25:50+00:00

All CVSS metrics

  • HIGH 7.5 v3.1 · CNA Primary
    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
  • HIGH 7.5 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS