Track vulnerabilities like this one.
Sign up free to get alerted when software you use is affected.
7.3
CVE-2026-7518: Open5GS can be forced to stop service remotely
CVE-2026-7518 · published 6 months ago
Summary
The Access and Mobility Function (AMF) component in Open5GS versions up to 2.7.7 can crash when it receives a specially crafted subscription‑change notification. This causes the core network to become unavailable, affecting mobile connectivity. Apply the latest Open5GS release or any vendor‑provided patch and limit exposure of the AMF endpoint to trusted sources.
Original advisory text
Open5GS AMF SBI Endpoint sdmsubscription-notify amf_namf_callback_handle_sdm_data_change_notify denial of service
A flaw has been found in Open5GS up to 2.7.7. This issue affects the function amf_namf_callback_handle_sdm_data_change_notify of the file /namf-callback/v1/{id}/sdmsubscription-notify of the component AMF SBI Endpoint. This manipulation of the argument changeItem.newValue causes denial of service. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
References
- https://github.com/open5gs/open5gs/ URL
- https://github.com/open5gs/open5gs/issues/4395 Third Party Advisory
- https://vuldb.com/vuln/360332 Vendor Advisory
- https://vuldb.com/vuln/360332/cti Third Party Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7518.j... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-7518 Vendor Advisory
- https://vuldb.com/submit/804023 Vendor Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Severity
7.3
High
Type
CWE-404Improper Resource Shutdown or Release
Timeline
Published1 May 2026
Updated4 Nov 2026
First seen1 May 2026
Track software like this
Free during beta