What is CVE-2024-28252?

CVE-2024-28252 is a high-severity vulnerability in Corewcf, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2024-03-15.

How severe is CVE-2024-28252?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2024-28252 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Corewcf

CVE-2024-28252

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. If you have a NetFraming based CoreWCF service, extra system resources could be consumed by connections being left established instead of closing or aborting them. There are two scenarios when this can happen. When a client established a connection to the service and sends no data, the service will wait indefinitely for the client to initiate the NetFraming session handshake. Additionally, once a client has established a session, if the client doesn't send any requests for the period of time configured in the binding ReceiveTimeout, the connection is not properly closed as part of the session being aborted. The bindings affected by this behavior are NetTcpBinding, NetNamedPipeBinding, and UnixDomainSocketBinding. Only NetTcpBinding has the ability to accept non local connections. The currently supported versions of CoreWCF are v1.4.x and v1.5.x. The fix can be found in v1.4.2 and v1.5.2 of the CoreWCF packages. Users are advised to upgrade. There are no workarounds for this issue.

Published 2024-03-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Corewcf — versions 1.5.1, >= 1.5.0, < 1.5.2, < 1.4.2

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

Public proof-of-concept exploits

NaInSec/CVE-LIST

References

github.com/CoreWCF/CoreWCF/security/advisories/GHSA-32jq-mv89-5rx7 (Vendor Advisory)
github.com/CoreWCF/CoreWCF/issues/1345 (Product, Issue Tracking)

Frequently asked questions

What is CVE-2024-28252?: CVE-2024-28252 is a high-severity vulnerability in Corewcf, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2024-03-15.
How severe is CVE-2024-28252?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-28252 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.