High severity · published Jan 30, 2026
CVE-2026-1684
Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports denial of service
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SM
SMF · Free5GC
4.0; 4.1.0 · source: vendor
FR
Free5gc · Free5gc
through 4.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1684
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1684
Exploit
https://github.com/free5gc/free5gc/issues/806
github.com
https://github.com/free5gc/smf/
Issue Tracking
https://github.com/free5gc/smf/pull/188
Permissions Required
https://vuldb.com/?ctiid.343477
Third Party Advisory
https://vuldb.com/?id.343477
Third Party Advisory
https://vuldb.com/?submit.739655
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