What is the CVSS score of CVE-2026-1973?

CVE-2026-1973 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.1%.

Which versions of Free5gc are affected by CVE-2026-1973?

Organizations using Free5GC should be aware of moderate risk from CVE-2026-1973 rated CVSS 5.3. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-1973?

Yes, a public proof-of-concept exploit is available for CVE-2026-1973. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1973?

Within 30 days: Identify affected systems running Free5GC and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Free5gc CVE-2026-1973

MEDIUM

Improper Resource Shutdown or Release (CWE-404)

2026-02-06 cna@vuldb.com

Null Pointer Dereference Free5gc

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 09, 2026 - 15:48 vuln.today

Public exploit code

CVE Published

Feb 06, 2026 - 02:16 nvd

MEDIUM 5.3

DescriptionCVE.org

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.

AnalysisAI

Free5GC versions up to 4.1.0 contain a null pointer dereference in the SMF's establishPfcpSession function that can be triggered remotely without authentication, causing a denial of service. Public exploit code exists for this vulnerability, and no patch is currently available.

Technical ContextAI

Classified as CWE-404 (Improper Resource Shutdown or Release). Affects Free5Gc. 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.