What’s Vulnerable › Vulnerabilities

CVE-2025-8801: Open5GS AMF gmm-sm.c gmm_state_exception 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: 2025-08-10 · updated 2026-06-17
• Weakness: CWE-404

Description

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.

Affected products

• Open5GS: before 2.7.6 — fixed in 2.7.6

How to fix

Upgrade to a fixed version: Open5GS 2.7.6. Check the vendor advisory for mitigations.

References

• https://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-8801
• https://github.com/open5gs/open5gs/commit/f47f2bd4f7274295c5fbb19e2f806753d183d09a
• https://github.com/open5gs/open5gs/issues/3977
• https://github.com/open5gs/open5gs/issues/3977#issuecomment-3052575886
• https://github.com/open5gs/open5gs/releases/tag/v2.7.6
• https://github.com/user-attachments/files/21095572/nudm-sdm.zip
• https://vuldb.com/?ctiid.319329
• https://vuldb.com/?id.319329
• https://vuldb.com/?submit.626118
• https://github.com/open5gs/open5gs/issues/3977

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