CVE-2022-39063Public exploitNetwork attack vector

Service crash via unchecked F-TEID length

Published Sep 16, 2022 · Updated Aug 3, 2024

Buffer overflow in Open5GS UPF before 2.4.9 allows remote attackers to crash the service via a crafted PFCP Session Establishment Request. The PFCP PDR handler copies the request's Local F-TEID into a fixed-size structure without bounding the length, then reuses the corrupted length in a response memcpy. Access to the UPF PFCP endpoint is sufficient, and successful exploitation interrupts the LTE or 5G packet-core service.

CVSS severity7.5
High
EPSS probability1.18%
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 Open5GS UPF before 2.4.9 allows remote attackers to crash the service via a crafted PFCP Session Establishment Request. The PFCP PDR handler copies the request's Local F-TEID into a fixed-size structure without bounding the length, then reuses the corrupted length in a response memcpy. Access to the UPF PFCP endpoint is sufficient, and successful exploitation interrupts the LTE or 5G packet-core service.

The record

CVE
CVE-2022-39063
Published
Sep 16, 2022
Updated
Aug 3, 2024
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-676, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 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=<2.4.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=<2.4.9

Published CVSS scores

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.

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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-676Use of Potentially Dangerous Function
T1499Endpoint Denial of Service

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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