CVE-2022-43222Public exploitNetwork attack vector

Service crash via unreleased PFCP nodes

Published Nov 1, 2022 · Updated May 2, 2025

Memory leak in the SMF PFCP handler in Open5GS 2.4.11 allows remote attackers to crash the service with crafted PFCP packets. The pfcp_recv_cb function allocates a node for each previously unseen PFCP source and retains it in a fixed-size 64-entry pool until SMF terminates. No authentication or user interaction is required; more than 64 invalid packets sent through different sockets exhaust the pool and crash SMF.

CVSS severity7.5
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the SMF PFCP handler in Open5GS 2.4.11 allows remote attackers to crash the service with crafted PFCP packets. The pfcp_recv_cb function allocates a node for each previously unseen PFCP source and retains it in a fixed-size 64-entry pool until SMF terminates. No authentication or user interaction is required; more than 64 invalid packets sent through different sockets exhaust the pool and crash SMF.

The record

CVE
CVE-2022-43222
Published
Nov 1, 2022
Updated
May 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2022CVE publishedPublication date reported by the CVE source.
  2. May 2, 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

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

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.003Application 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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