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%.

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

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

DescriptionNVD

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.

RemediationAI

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

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-1973 vulnerability details – vuln.today

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Free5gc CVE-2026-1973

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

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External POC / Exploit Code