A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a Free5GC affected
Version Status Constraints
4.1.0 affected
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Subscriptions

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Tracking

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799 cve-icon cve-icon
https://github.com/free5gc/amf/pull/198 cve-icon cve-icon
https://github.com/free5gc/free5gc/ cve-icon cve-icon
https://github.com/free5gc/free5gc/issues/792 cve-icon cve-icon
https://vuldb.com/?ctiid.352319 cve-icon cve-icon
https://vuldb.com/?id.352319 cve-icon cve-icon
https://vuldb.com/?submit.774073 cve-icon cve-icon
History

Sun, 22 Mar 2026 01:45:00 +0000

Type Values Removed Values Added
Description A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.
Title Free5GC AMF handler.go HandleRegistrationComplete denial of service
First Time appeared Free5gc
Free5gc free5gc
Weaknesses CWE-404
CPEs cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*
Vendors & Products Free5gc
Free5gc free5gc
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, '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:X'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-22T01:32:11.642Z

Reserved: 2026-03-21T07:47:21.184Z

Link: CVE-2026-4531

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-22T02:15:59.270

Modified: 2026-03-22T02:15:59.270

Link: CVE-2026-4531

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses