CVE-2024-28252Network attack vector

Service interruption via unreleased idle connections

Published Mar 15, 2024 · Updated Aug 26, 2024

Resource exhaustion in CoreWCF before 1.4.2 and 1.5.0 through 1.5.1 allows remote attackers to interrupt NetTcp services. The NetFraming connection-abort path calls ConnectionContext.Abort without an exception, causing ASP.NET Core to shut down the socket cleanly rather than reset it while idle connections remain established. Unauthenticated network reachability is limited to NetTcpBinding; accumulated pre-handshake or post-session idle connections consume server resources until service availability is lost.

CVSS severity7.5
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in CoreWCF before 1.4.2 and 1.5.0 through 1.5.1 allows remote attackers to interrupt NetTcp services. The NetFraming connection-abort path calls ConnectionContext.Abort without an exception, causing ASP.NET Core to shut down the socket cleanly rather than reset it while idle connections remain established. Unauthenticated network reachability is limited to NetTcpBinding; accumulated pre-handshake or post-session idle connections consume server resources until service availability is lost.

The record

CVE
CVE-2024-28252
Published
Mar 15, 2024
Updated
Aug 26, 2024
Vendor
CoreWCF
Product
CoreWCF
Classifications
CWE-404, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.2
  2. Affected versionversion=< 1.4.2
  3. Affected versionversion=>= 1.5.0, < 1.5.2
  4. Affected versionversion=1.5.0 <1.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CoreWCF · CoreWCFversion=0 <1.4.2; version=< 1.4.2; version=>= 1.5.0, < 1.5.2; version=1.5.0 <1.5.2

Published CVSS scores

7.5CoreWCFCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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