Medium severity · published Jun 3, 2025
CVE-2025-5520
Open5GS AMF/MME emm_state_authentication assertion
5.3
CVSS
0.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Open5GS ·
2.7.0; 2.7.1; 2.7.2; 2.7.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-5520
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-5520
Patch
https://github.com/open5gs/open5gs/commit/9f5d133657850e6167231527514ee1364d37a884
Exploit
https://github.com/open5gs/open5gs/issues/3910
Exploit
https://github.com/open5gs/open5gs/issues/3910#issuecomment-2926719317
Exploit
https://github.com/user-attachments/files/20362243/Problematic.handover.required.process.zip
Permissions Required
https://vuldb.com/?ctiid.310956
Third Party Advisory
https://vuldb.com/?id.310956
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