CVE-2023-47025Public exploit

AMF crash via nil pointer dereference

Published Nov 16, 2023 · Updated Aug 12, 2024

Denial of service in free5GC 3.3.0 allows local users to crash the AMF by sending a crafted UE registration request over SCTP. The AMF NGAP dispatcher processes the request after peer-address resolution returns nil, then dereferences the nil value and terminates the AMF process. Low-privileged access to the SCTP service on port 38412 is required, and a successful trigger disconnects other UEs from the core network.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in free5GC 3.3.0 allows local users to crash the AMF by sending a crafted UE registration request over SCTP. The AMF NGAP dispatcher processes the request after peer-address resolution returns nil, then dereferences the nil value and terminates the AMF process. Low-privileged access to the SCTP service on port 38412 is required, and a successful trigger disconnects other UEs from the core network.

The record

CVE
CVE-2023-47025
Published
Nov 16, 2023
Updated
Aug 12, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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