CVE-2025-65559Public exploitNetwork attack vector

UPF crash via mismatched F-TEID address family

Published Dec 18, 2025 · Updated Dec 18, 2025

Reachable assertion in Open5GS 2.7.5-49-g465e90f allows remote attackers to crash the UPF with a crafted PFCP request. ogs_pfcp_object_teid_hash_set asserts that the request's F-TEID family matches the selected DNN's GTP-U resource instead of rejecting a mismatch. An attacker able to reach UDP port 8805 and establish a PFCP association can abort the UPF process when the IPv4 and IPv6 families differ.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Open5GS 2.7.5-49-g465e90f allows remote attackers to crash the UPF with a crafted PFCP request. ogs_pfcp_object_teid_hash_set asserts that the request's F-TEID family matches the selected DNN's GTP-U resource instead of rejecting a mismatch. An attacker able to reach UDP port 8805 and establish a PFCP association can abort the UPF process when the IPv4 and IPv6 families differ.

The record

CVE
CVE-2025-65559
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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 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-617Reachable Assertion
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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