CVE-2026-1973

Free5GC SMF establishPfcpSession null pointer dereference

Assigner: VulDB
Reserved: 05.02.2026 Published: 06.02.2026 Updated: 06.02.2026

A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.0

CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C
CVSS Score: 5

Access Vector	Network	Confidentiality Impact	None
Access Complexity	Low	Integrity Impact	None
Authentication	None	Availability Impact	Partial

CVSS 2.0

Product Status

Vendor	n/a
Product	Free5GC
Versions	Version 4.0 is affected Version 4.1.0 is affected

Vendor

n/a

Product

Free5GC

Versions

Version 4.0 is affected
Version 4.1.0 is affected

Credits

ZiyuLin (VulDB User) reporter

References

Problem Types