CVE-2024-24443Network attack vector

AMF crash via empty optional dereference

Published Jan 21, 2025 · Updated Jul 5, 2026

A null pointer dereference in OpenAirInterface CN5G AMF 2.0.0 and earlier allows remote attackers to crash the AMF via a crafted NGAP response. PduSessionResourceSetupResponseMsg dereferences the empty pduSessionResourceFailedToSetupResponseList optional before constructing it, so decoding the FailedToSetupList can perform an out-of-bounds vector write. The crafted PDU Session Resource Setup Response must reach the AMF over the N2 interface; successful exploitation interrupts cellular service by crashing the AMF.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A null pointer dereference in OpenAirInterface CN5G AMF 2.0.0 and earlier allows remote attackers to crash the AMF via a crafted NGAP response. PduSessionResourceSetupResponseMsg dereferences the empty pduSessionResourceFailedToSetupResponseList optional before constructing it, so decoding the FailedToSetupList can perform an out-of-bounds vector write. The crafted PDU Session Resource Setup Response must reach the AMF over the N2 interface; successful exploitation interrupts cellular service by crashing the AMF.

The record

CVE
CVE-2024-24443
Published
Jan 21, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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