What’s Vulnerable › Vulnerabilities

CVE-2025-8803: 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: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-10 · updated 2026-06-17
• Weakness: CWE-404

Description

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.

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
• https://github.com/open5gs/open5gs/commit/1f30edac27f69f61cff50162e980fe58fdeb30ca
• https://github.com/open5gs/open5gs/issues/3948
• https://github.com/open5gs/open5gs/issues/3948#issuecomment-3030223641
• https://github.com/open5gs/open5gs/releases/tag/v2.7.6
• https://vuldb.com/?ctiid.319332
• https://vuldb.com/?id.319332
• https://vuldb.com/?submit.626123
• https://github.com/open5gs/open5gs/issues/3948

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