CVE-2026-1973

MEDIUM
2026-02-06 [email protected]
5.3
CVSS 3.1
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CVSS Vector

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

3
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

Tags

Null Pointer Dereference Free5gc

Description

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.

Analysis

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.

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Remediation

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

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Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +26
POC: +20

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CVE-2026-1973 vulnerability details – vuln.today
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