CVE-2026-1684: Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports denial of service

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-30 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcp_reports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to implement a patch to correct this issue.

Affected products

free5gc: through 4.1.0

References

https://github.com/free5gc/free5gc/issues/806
https://github.com/free5gc/smf/
https://github.com/free5gc/smf/pull/188
https://vuldb.com/?ctiid.343477
https://vuldb.com/?id.343477
https://vuldb.com/?submit.739655
https://vuldb.com/?submit.739656

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