What’s Vulnerable › Vulnerabilities

CVE-2025-1925: Open5GS AMF nsmf-handler.c amf_nsmf_pdusession_handle_update_sm_context denial of service

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-03-04 · updated 2026-06-17
• Weakness: CWE-404

Description

A vulnerability classified as problematic was found in Open5GS up to 2.7.2. Affected by this vulnerability is the function amf_nsmf_pdusession_handle_update_sm_context of the file src/amf/nsmf-handler.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. It is recommended to apply a patch to fix this issue.

Affected products

• Open5GS: through 2.7.2

References

• https://github.com/guoweifk/BugReport/blob/main/Open5GS%20AMF%20Denial%20of%20Service%20via%20PDU%20Session%20ID%20Conflict
• https://github.com/open5gs/open5gs/pull/3711
• https://vuldb.com/?ctiid.298513
• https://vuldb.com/?id.298513
• https://vuldb.com/?submit.506038

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