CVE-2024-24418Network attack vector

MME crash via unsigned NAS length underflow

Published Jan 21, 2025 · Updated Mar 24, 2025

Buffer overflow in Linux Foundation Magma 1.8.0 and earlier allows remote attackers to crash the MME with a crafted NAS packet. In decode_pdn_address in PdnAddress.cpp, subtracting a signed decoded count from an unsigned packet length can wrap when the input is too short, bypassing the length check and causing out-of-bounds accesses. An unauthenticated device able to submit an Initial UE Message over S1AP can interrupt cellular service by crashing the MME.

CVSS severity7.5
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Linux Foundation Magma 1.8.0 and earlier allows remote attackers to crash the MME with a crafted NAS packet. In decode_pdn_address in PdnAddress.cpp, subtracting a signed decoded count from an unsigned packet length can wrap when the input is too short, bypassing the length check and causing out-of-bounds accesses. An unauthenticated device able to submit an Initial UE Message over S1AP can interrupt cellular service by crashing the MME.

The record

CVE
CVE-2024-24418
Published
Jan 21, 2025
Updated
Mar 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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