CVE-2026-1976

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 - 15:04 vuln.today
Public exploit code
CVE Published
Feb 06, 2026 - 03:15 nvd
MEDIUM 5.3

Tags

Null Pointer Dereference Free5gc

Description

A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.

Analysis

Free5GC versions up to 4.1.0 are vulnerable to a null pointer dereference in the SMF component's SessionDeletionResponse function, allowing unauthenticated remote attackers to cause 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-2026-1976 vulnerability details – vuln.today
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