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THREATINT
PUBLISHED

CVE-2025-5520

Open5GS AMF/MME emm_state_authentication assertion



Description

EN DE

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.

Es wurde eine problematische Schwachstelle in Open5GS bis 2.7.3 ausgemacht. Hiervon betroffen ist die Funktion gmm_state_authentication/emm_state_authentication der Komponente AMF/MME. Durch Manipulieren mit unbekannten Daten kann eine reachable assertion-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk angegangen werden. Der Exploit steht zur öffentlichen Verfügung. Der Patch wird als 9f5d133657850e6167231527514ee1364d37a884 bezeichnet. Als bestmögliche Massnahme wird Patching empfohlen.

Reserved 2025-06-03 | Published 2025-06-03 | Updated 2025-06-03 | Assigner VulDB


MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Problem types

Reachable Assertion

Timeline

2025-06-03:Advisory disclosed
2025-06-03:VulDB entry created
2025-06-03:VulDB entry last update

Credits

SQ0409 (VulDB User) reporter

References

vuldb.com/?id.310956 (VDB-310956 | Open5GS AMF/MME emm_state_authentication assertion) vdb-entry technical-description

vuldb.com/?ctiid.310956 (VDB-310956 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.582269 (Submit #582269 | Open5GS <=2.7.3 Reachable Assertion) third-party-advisory

github.com/open5gs/open5gs/issues/3910 issue-tracking

github.com/open5gs/open5gs/issues/3910 issue-tracking

github.com/...2243/Problematic.handover.required.process.zip exploit

github.com/...ommit/9f5d133657850e6167231527514ee1364d37a884 patch

cve.org (CVE-2025-5520)

nvd.nist.gov (CVE-2025-5520)

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