CVE-2024-24431Network attack vector

MME crash via zero-length EMM message

Published Nov 15, 2024 · Updated Dec 3, 2024

Reachable assertion in Open5GS 2.7.0 allows remote attackers to crash the MME with a crafted zero-length LTE NAS EMM packet. The ogs_nas_emm_decode function reaches ogs_assert(pkbuf->len) after receiving an EMM payload whose declared message length is zero. Network access to the MME's NAS processing path is sufficient; triggering the assertion terminates the process and interrupts LTE service.

CVSS severity7.5
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Open5GS 2.7.0 allows remote attackers to crash the MME with a crafted zero-length LTE NAS EMM packet. The ogs_nas_emm_decode function reaches ogs_assert(pkbuf->len) after receiving an EMM payload whose declared message length is zero. Network access to the MME's NAS processing path is sufficient; triggering the assertion terminates the process and interrupts LTE service.

The record

CVE
CVE-2024-24431
Published
Nov 15, 2024
Updated
Dec 3, 2024
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-78, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=2.7.0

Published CVSS scores

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.

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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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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