CVE-2025-52322Public exploitNetwork attack vector

Service interruption via duplicate UE IP acceptance

Published Sep 9, 2025 · Updated Sep 10, 2025

Improper session handling in Open5GS 2.7.2 and earlier allows remote attackers to interrupt service via a crafted GTP-C Create Session Request. The SMF accepts a PAA address already assigned to a legitimate UE, then directs the UPF to install a second downlink PDR/FAR for that address. Unauthenticated access to UDP port 2123 permits traffic for the legitimate UE to be redirected to an attacker-controlled endpoint.

CVSS severity7.5
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper session handling in Open5GS 2.7.2 and earlier allows remote attackers to interrupt service via a crafted GTP-C Create Session Request. The SMF accepts a PAA address already assigned to a legitimate UE, then directs the UPF to install a second downlink PDR/FAR for that address. Unauthenticated access to UDP port 2123 permits traffic for the legitimate UE to be redirected to an attacker-controlled endpoint.

The record

CVE
CVE-2025-52322
Published
Sep 9, 2025
Updated
Sep 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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

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-400Uncontrolled Resource Consumption
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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