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CVE-2019-0548· NVD / CVE Program· CNA microsoft

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerabilit

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.2, ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0564.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Jan 8, 2019
Updated
Jun 16, 2026
EPSS
8.2% · 95th percentile
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Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 8.2%

Affected systems

VendorProduct
microsoftasp.net core

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft asp.net core2.1
  • microsoft asp.net core2.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft ASP.NET Core

    • 2.1, 2.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21before 0:2.1-6.el70:2.1-6.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnetbefore 0:2.1.503-1.el70:2.1.503-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnet-debuginfobefore 0:2.1.503-1.el70:2.1.503-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnet-hostbefore 0:2.1.7-1.el70:2.1.7-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnet-runtime-2.1before 0:2.1.7-1.el70:2.1.7-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnet-sdk-2.1before 0:2.1.503-1.el70:2.1.503-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-dotnet-sdk-2.1.5xxbefore 0:2.1.503-1.el70:2.1.503-1.el7
Red Hat:rhel_dotnet:2.1::el7rh-dotnet21-runtimebefore 0:2.1-6.el70:2.1-6.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22before 0:2.2-2.el70:2.2-2.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnetbefore 0:2.2.102-1.el70:2.2.102-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-debuginfobefore 0:2.2.102-1.el70:2.2.102-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-hostbefore 0:2.2.1-1.el70:2.2.1-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-host-fxr-2.2before 0:2.2.1-1.el70:2.2.1-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-runtime-2.2before 0:2.2.1-1.el70:2.2.1-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-sdk-2.2before 0:2.2.102-1.el70:2.2.102-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-dotnet-sdk-2.2.1xxbefore 0:2.2.102-1.el70:2.2.102-1.el7
Red Hat:rhel_dotnet:2.2::el7rh-dotnet22-runtimebefore 0:2.2-2.el70:2.2-2.el7

Other highest-scoring records for the same primary product.

  • CVE-2025-55315ASP.NET Security Feature Bypass Vulnerability
    59Plan
  • CVE-2020-0603A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who su
    41Plan
  • CVE-2018-0787ASP.NET Core 1.0.
    38Monitor
  • CVE-2017-11879ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL
    38Monitor
  • CVE-2018-0784ASP.NET Core 1.0.
    37Monitor
  • CVE-2026-40372ASP.NET Core Elevation of Privilege Vulnerability
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:rh-dotnet210:2.1-6.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet0:2.1.503-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet-debuginfo0:2.1.503-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet-host0:2.1.7-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet-runtime-2.10:2.1.7-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet-sdk-2.10:2.1.503-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-dotnet-sdk-2.1.5xx0:2.1.503-1.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet21-runtime0:2.1-6.el7 · Red Hat:rhel_dotnet:2.1::el7Package registry (OSV)
red hat:rh-dotnet220:2.2-2.el7 · Red Hat:rhel_dotnet:2.2::el7Package registry (OSV)
red hat:rh-dotnet22-dotnet0:2.2.102-1.el7 · Red Hat:rhel_dotnet:2.2::el7Package registry (OSV)
red hat:rh-dotnet22-dotnet-debuginfo0:2.2.102-1.el7 · Red Hat:rhel_dotnet:2.2::el7Package registry (OSV)
red hat:rh-dotnet22-dotnet-host0:2.2.1-1.el7 · Red Hat:rhel_dotnet:2.2::el7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

All records