High severity · published Jan 30, 2026
CVE-2026-1682
Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been published and may be used. A patch should be applied to remediate 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)0.7% · higher than 54% 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-2026-1682
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1682
Exploit
https://github.com/free5gc/free5gc/issues/794
Exploit
https://github.com/free5gc/free5gc/issues/794#issue-3811888505
Issue Tracking
https://github.com/free5gc/free5gc/issues/794#issuecomment-3761063382
github.com
https://github.com/free5gc/smf/
Issue Tracking
https://github.com/free5gc/smf/pull/188
Permissions Required
https://vuldb.com/?ctiid.343475
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