CVE-2024-24421Network attack vector

Code execution via inner NAS header confusion

Published Jan 21, 2025 · Updated Mar 20, 2025

Type confusion in Magma 1.8.0 and earlier allows remote attackers to execute arbitrary code or crash the MME via a crafted NAS packet. The nas_message_decode path decrypts an EMM-framed payload without verifying that its inner header is EMM, then treats an ESM union member as an EMM message. An unauthenticated mobile device can reach the decoder with an Initial UE Message, while Wi-Fi Calling exposure can extend that path to the internet.

CVSS severity9.8
Critical
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Magma 1.8.0 and earlier allows remote attackers to execute arbitrary code or crash the MME via a crafted NAS packet. The nas_message_decode path decrypts an EMM-framed payload without verifying that its inner header is EMM, then treats an ESM union member as an EMM message. An unauthenticated mobile device can reach the decoder with an Initial UE Message, while Wi-Fi Calling exposure can extend that path to the internet.

The record

CVE
CVE-2024-24421
Published
Jan 21, 2025
Updated
Mar 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2025Record 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

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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