CVE-2025-29646Public exploitNetwork attack vector

Remote service crash via unchecked PFCP TEID

Published Jun 18, 2025 · Updated Jun 20, 2025

Improper input validation in Open5GS UPF 2.7.2 and earlier allows remote attackers to crash the service with a crafted PFCP request. The PFCP restoration path fails to validate a zero or out-of-range TEID before ogs_pfcp_pdr_swap_teid enforces its range assertion and aborts open5gs-upfd in lib/pfcp/context.c. The attacker must reach the UPF PFCP listener and establish a PFCP association; one malicious session request terminates the daemon.

CVSS severity7.1
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Open5GS UPF 2.7.2 and earlier allows remote attackers to crash the service with a crafted PFCP request. The PFCP restoration path fails to validate a zero or out-of-range TEID before ogs_pfcp_pdr_swap_teid enforces its range assertion and aborts open5gs-upfd in lib/pfcp/context.c. The attacker must reach the UPF PFCP listener and establish a PFCP association; one malicious session request terminates the daemon.

The record

CVE
CVE-2025-29646
Published
Jun 18, 2025
Updated
Jun 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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

7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

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-20Improper Input Validation
T1499.004Application 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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