CVE-2024-51179Public exploitNetwork attack vector

Service interruption via incorrect PFCP event deallocation

Published Nov 12, 2024 · Updated Nov 13, 2024

Denial of service in Open5GS 2.7.1 allows remote attackers to crash UPF and SMF services with crafted PFCP packets. PFCP receive callbacks in UPF, SGWU, and SGWC use a generic event deallocator after node-allocation failure, releasing event memory incorrectly. Exploitation requires PFCP reachability plus the UPF address, port, and a valid SEID obtainable from user-plane traffic; crashes block new PDU sessions.

CVSS severity7.5
High
EPSS probability1.07%
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 Open5GS 2.7.1 allows remote attackers to crash UPF and SMF services with crafted PFCP packets. PFCP receive callbacks in UPF, SGWU, and SGWC use a generic event deallocator after node-allocation failure, releasing event memory incorrectly. Exploitation requires PFCP reachability plus the UPF address, port, and a valid SEID obtainable from user-plane traffic; crashes block new PDU sessions.

The record

CVE
CVE-2024-51179
Published
Nov 12, 2024
Updated
Nov 13, 2024
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-404, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 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=2.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=2.7.1

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 exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.002Service Exhaustion Flood

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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