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4 vulnerabilities found for amf by free5gc
CVE-2026-41136 (GCVE-0-2026-41136)
Vulnerability from nvd – Published: 2026-04-21 23:54 – Updated: 2026-04-22 13:11
VLAI
Title
free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer
Summary
free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-440 - Expected Behavior Violation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/amf/releases/tag/v1.4.3 | x_refsource_MISC |
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CVE-2025-69248 (GCVE-0-2025-69248)
Vulnerability from nvd – Published: 2026-02-23 21:42 – Updated: 2026-02-25 15:32
VLAI
Title
free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
Summary
free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/747 | x_refsource_MISC |
| https://github.com/free5gc/nas/pull/43 | x_refsource_MISC |
| https://github.com/free5gc/nas/commit/0329a7ac3f3… | x_refsource_MISC |
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CVE-2026-41136 (GCVE-0-2026-41136)
Vulnerability from cvelistv5 – Published: 2026-04-21 23:54 – Updated: 2026-04-22 13:11
VLAI
Title
free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer
Summary
free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-440 - Expected Behavior Violation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/amf/releases/tag/v1.4.3 | x_refsource_MISC |
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CVE-2025-69248 (GCVE-0-2025-69248)
Vulnerability from cvelistv5 – Published: 2026-02-23 21:42 – Updated: 2026-02-25 15:32
VLAI
Title
free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
Summary
free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/747 | x_refsource_MISC |
| https://github.com/free5gc/nas/pull/43 | x_refsource_MISC |
| https://github.com/free5gc/nas/commit/0329a7ac3f3… | x_refsource_MISC |
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