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4 vulnerabilities found for go-upf by free5gc
CVE-2025-69247 (GCVE-0-2025-69247)
Vulnerability from nvd – Published: 2026-02-23 21:38 – Updated: 2026-02-25 15:30
VLAI
Title
free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service
Summary
free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/746 | x_refsource_MISC |
| https://github.com/free5gc/go-upf/pull/85 | x_refsource_MISC |
| https://github.com/free5gc/go-upf/commit/b798fe5e… | x_refsource_MISC |
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CVE-2025-69232 (GCVE-0-2025-69232)
Vulnerability from nvd – Published: 2026-02-23 21:27 – Updated: 2026-02-25 15:26
VLAI
Title
free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption
Summary
free5GC is an open-source project for 5th generation (5G) mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote attackers can disrupt core network functionality by sending a malformed PFCP Association Setup Request. The UPF incorrectly accepts it, entering an inconsistent state that causes subsequent legitimate requests to trigger SMF reconnection loops and service degradation. All deployments of free5GC using the UPF and SMF components may be affected. As of time of publication, a fix is in development but not yet available. No direct workaround is available at the application level. Applying the official patch, once released, is recommended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/745 | x_refsource_MISC |
Impacted products
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CVE-2025-69247 (GCVE-0-2025-69247)
Vulnerability from cvelistv5 – Published: 2026-02-23 21:38 – Updated: 2026-02-25 15:30
VLAI
Title
free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service
Summary
free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/746 | x_refsource_MISC |
| https://github.com/free5gc/go-upf/pull/85 | x_refsource_MISC |
| https://github.com/free5gc/go-upf/commit/b798fe5e… | x_refsource_MISC |
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CVE-2025-69232 (GCVE-0-2025-69232)
Vulnerability from cvelistv5 – Published: 2026-02-23 21:27 – Updated: 2026-02-25 15:26
VLAI
Title
free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption
Summary
free5GC is an open-source project for 5th generation (5G) mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote attackers can disrupt core network functionality by sending a malformed PFCP Association Setup Request. The UPF incorrectly accepts it, entering an inconsistent state that causes subsequent legitimate requests to trigger SMF reconnection loops and service degradation. All deployments of free5GC using the UPF and SMF components may be affected. As of time of publication, a fix is in development but not yet available. No direct workaround is available at the application level. Applying the official patch, once released, is recommended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/745 | x_refsource_MISC |
Impacted products
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