Sukchan Lee

47 exploits Active since Dec 2021
CVE-2025-1893 WRITEUP MEDIUM WRITEUP
Open5GS < 2.7.2 - Denial of Service in AMF gmm_state_authentication
A vulnerability was found in Open5GS up to 2.7.2. It has been declared as problematic. Affected by this vulnerability is the function gmm_state_authentication of the file src/amf/gmm-sm.c of the component AMF. The manipulation leads to denial of service. The attack can be launched remotely. This vulnerability allows a single UE to crash the AMF, resulting in the complete loss of mobility and session management services and causing a network-wide outage. All registered UEs will lose connectivity, and new registrations will be blocked until the AMF is restarted, leading to a high availability impact. The exploit has been disclosed to the public and may be used. The patch is named e31e9965f00d9c744a7f728497cb4f3e97744ee8. It is recommended to apply a patch to fix this issue.
CVSS 4.3
CVE-2025-25774 WRITEUP MEDIUM WRITEUP
Open5GS - Denial of Service via GMM State Handling in Handover
An issue was discovered in Open5GS v2.7.2. When a UE switches between two gNBs and sends a handover request at a specific time, it may cause an exception in the AMF's internal state machine, leading to an AMF crash and resulting in a Denial of Service (DoS).
CVSS 6.5
CVE-2025-44951 WRITEUP HIGH WRITEUP
open5gs < 2.7.2 - Buffer Overflow in ogs_pfcp_dev_add Function
A missing length check in `ogs_pfcp_dev_add` function from PFCP library, used by both smf and upf in open5gs 2.7.2 and earlier, allows a local attacker to cause a Buffer Overflow by changing the `session.dev` field with a value with length greater than 32.
CVSS 7.1
CVE-2025-52288 WRITEUP HIGH WRITEUP
Open5GS < 2.7.5 - Denial of Service via Repeated UE Connect/Disconnect Messages
Assertion failure in function ngap_build_downlink_nas_transport in file src/amf/ngap-build.c, the Access and Mobility Management Function (AMF) component, in Open5GS thru 2.7.5 allowing attackers to cause a denial of service or other unspecified impacts via repeated UE connect and disconnect message sequences.
CVSS 7.5
CVE-2025-55904 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service via Empty Multipart HTTP POST Request
Open5GS v2.7.5, prior to commit 67ba7f92bbd7a378954895d96d9d7b05d5b64615, is vulnerable to a NULL pointer dereference when a multipart/related HTTP POST request with an empty HTTP body is sent to the SBI of either AMF, AUSF, BSF, NRF, NSSF, PCF, SMF, UDM, or UDR, resulting in a denial of service. This occurs in the parse_multipart function in lib/sbi/message.c.
CVSS 4.0
CVE-2025-5501 WRITEUP MEDIUM WRITEUP
Open5GS <2.7.3 - Reachable Assertion
A vulnerability classified as problematic was found in Open5GS up to 2.7.3. Affected by this vulnerability is the function ngap_handle_path_switch_request_transfer of the file src/smf/ngap-handler.c of the component NGAP PathSwitchRequest Message Handler. The manipulation leads to reachable assertion. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The patch is named 2daa44adab762c47a8cef69cc984946973a845b3. It is recommended to apply a patch to fix this issue.
CVSS 5.3
CVE-2025-5520 WRITEUP MEDIUM WRITEUP
Open5GS <2.7.3 - Reachable Assertion
A vulnerability was found in Open5GS up to 2.7.3. It has been classified as problematic. Affected is the function gmm_state_authentication/emm_state_authentication of the component AMF/MME. The manipulation leads to reachable assertion. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 9f5d133657850e6167231527514ee1364d37a884. It is recommended to apply a patch to fix this issue. This is a different issue than CVE-2025-1893.
CVSS 5.3
CVE-2025-5935 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service via ran_ue_id Argument in common_register_state
A vulnerability was found in Open5GS up to 2.7.3. It has been declared as problematic. Affected by this vulnerability is the function common_register_state of the file src/mme/emm-sm.c of the component AMF/MME. The manipulation of the argument ran_ue_id leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 62cb99755243c9c38e4c060c5d8d0e158fe8cdd5. It is recommended to apply a patch to fix this issue.
CVSS 5.3
CVE-2025-63288 WRITEUP HIGH WRITEUP
Open5GS 2.7.6 - Denial of Service via Abnormal NGSetupRequest Message
In Open5GS 2.7.6, AMF crashes when receiving an abnormal NGSetupRequest message, resulting in denial of service.
CVSS 7.5
CVE-2025-6952 WRITEUP LOW WRITEUP
Open5GS < 2.7.6 - Reachable Assertion in AMF Service amf_state_operational
A vulnerability, which was classified as problematic, has been found in Open5GS up to 2.7.5. This issue affects the function amf_state_operational of the file src/amf/amf-sm.c of the component AMF Service. The manipulation leads to reachable assertion. It is possible to launch the attack on the local host. The identifier of the patch is 53e9e059ed96b940f7ddcd9a2b68cb512524d5db. It is recommended to apply a patch to fix this issue.
CVSS 3.3
CVE-2025-7485 WRITEUP LOW WRITEUP
Open5GS <2.7.3 - Reachable Assertion
A vulnerability classified as problematic was found in Open5GS up to 2.7.3. Affected by this vulnerability is the function ngap_recv_handler/s1ap_recv_handler/recv_handler of the component SCTP Partial Message Handler. The manipulation leads to reachable assertion. The attack needs to be approached locally. The patch is named cfa44575020f3fb045fd971358442053c8684d3d. It is recommended to apply a patch to fix this issue.
CVSS 3.3
CVE-2025-8698 WRITEUP LOW WRITEUP
Open5GS < 2.7.5 - Reachable Assertion in AMF Service nsmf-handler.c
A vulnerability was found in Open5GS up to 2.7.5. It has been classified as problematic. Affected is the function amf_nsmf_pdusession_handle_release_sm_context of the file src/amf/nsmf-handler.c of the component AMF Service. The manipulation leads to reachable assertion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The name of the patch is 66bc558e417e70ae216ec155e4e81c14ae0ecf30. It is recommended to apply a patch to fix this issue.
CVSS 3.3
CVE-2025-8799 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in AMF NPCF Policy Control
A vulnerability was identified in Open5GS up to 2.7.5. Affected by this vulnerability is the function amf_npcf_am_policy_control_build_create/amf_nsmf_pdusession_build_create_sm_context of the file src/amf/npcf-build.c of the component AMF. The manipulation leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The patch is named cf63dd63197bf61a4b041aa364ba6a6199ab15e4. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8800 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in esm_handle_pdn_connectivity_request
A vulnerability has been found in Open5GS up to 2.7.5. Affected by this issue is the function esm_handle_pdn_connectivity_request of the file src/mme/esm-handler.c of the component AMF Component. The manipulation leads to denial of service. The attack may be launched remotely. Upgrading to version 2.7.6 is able to address this issue. The name of the patch is 701505102f514cbde2856cd2ebc9bedb7efc820d. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8801 WRITEUP MEDIUM WRITEUP
Open5GS < 2.7.6 - Denial of Service in AMF gmm_state_exception
A vulnerability was found in Open5GS up to 2.7.5. This affects the function gmm_state_exception of the file src/amf/gmm-sm.c of the component AMF. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The identifier of the patch is f47f2bd4f7274295c5fbb19e2f806753d183d09a. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8802 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in SMF State Operational Function
A vulnerability was determined in Open5GS up to 2.7.5. This vulnerability affects the function smf_state_operational of the file src/smf/smf-sm.c of the component SMF. The manipulation of the argument stream leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version v2.7.6 is able to address this issue. The patch is identified as f168f7586a4fa536cee95ae60ac437d997f15b97. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8803 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in AMF gmm_state_de_registered Function
A vulnerability has been found in Open5GS up to 2.7.5. Affected is the function gmm_state_de_registered/gmm_state_exception of the file src/amf/gmm-sm.c of the component AMF. The manipulation leads to denial of service. It is possible to launch the attack remotely. Upgrading to version 2.7.6 is able to address this issue. The name of the patch is 1f30edac27f69f61cff50162e980fe58fdeb30ca. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8804 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Reachable Assertion in AMF ngap_build_downlink_nas_transport
A vulnerability was found in Open5GS up to 2.7.5. Affected by this vulnerability is the function ngap_build_downlink_nas_transport of the component AMF. The manipulation leads to reachable assertion. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The identifier of the patch is bca0a7b6e01d254f4223b83831162566d4626428. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-8805 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in SMF GSM State Handler
A vulnerability was determined in Open5GS up to 2.7.5. Affected by this issue is the function smf_gsm_state_wait_pfcp_deletion of the file src/smf/gsm-sm.c of the component SMF. The manipulation leads to denial of service. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The patch is identified as c58b8f081986aaf2a312d73a0a17985518b47fe6. It is recommended to upgrade the affected component.
CVSS 5.3
CVE-2025-9405 WRITEUP MEDIUM WRITEUP
Open5GS <2.7.5 - Reachable Assertion
A security flaw has been discovered in Open5GS up to 2.7.5. The impacted element is the function gmm_state_exception of the file src/amf/gmm-sm.c. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited. The patch is identified as 8e5fed16114f2f5e40bee1b161914b592b2b7b8f. Applying a patch is advised to resolve this issue.
CVSS 5.3
CVE-2026-1521 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in SGWC Bearer Resource Failure Indication Handler
A security flaw has been discovered in Open5GS up to 2.7.6. This affects the function sgwc_s5c_handle_bearer_resource_failure_indication of the file src/sgwc/s5c-handler.c of the component SGWC. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 69b53add90a9479d7960b822fc60601d659c328b. It is recommended to apply a patch to fix this issue.
CVSS 5.3
CVE-2026-1522 WRITEUP MEDIUM WRITEUP
open5gs < 2.7.6 - Denial of Service in SGWC S5C Handler
A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_bearer_response of the file src/sgwc/s5c-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This patch is called b19cf6a. Applying a patch is advised to resolve this issue. The issue report is flagged as already-fixed.
CVSS 5.3