CVE-2026-1684 Details
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.
A denial-of-service vulnerability has been identified in Free5GC SMF versions through 4.1.0. The issue arises in the PFCP UDP Endpoint component, specifically within the HandleReports function of pfcp_reports.go. The vulnerability can be exploited remotely by sending a PFCP Session Report Request that includes the ReportType.USAR flag and a UsageReport Information Element (IE), but omits the mandatory VolumeMeasurement sub-IE. This omission leads to a nil pointer dereference, causing the SMF process to crash and terminate, thereby disrupting service.
Users are advised to update to Free5GC SMF version 4.1.1 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/free5gc/free5gc/issues/806 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://github.com/free5gc/smf/ | [email protected] | |
| https://github.com/free5gc/smf/pull/188 | [email protected] | Issue Tracking |
| https://vuldb.com/?ctiid.343477 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.343477 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.739655 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.739656 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| free5gc free5gc | <= 4.1.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 23, 2026 | CVE Modified | [email protected] |
| Feb 17, 2026 | Initial Analysis | [email protected] |
| Jan 30, 2026 | New CVE Received | [email protected] |