Vulnerability Monitor

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CVE-2025-5520

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 1 product from open5gs organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2025-06-03T18:15:27.257

Last Modified

2025-06-09T15:13:24.183

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-617

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	open5gs	open5gs	≤ 2.7.3	Yes

References

https://github.com/open5gs/open5gs/commit/9f5d133657850e6167231527514ee1364d37a884 Patch ([email protected])
https://github.com/open5gs/open5gs/issues/3910 Exploit, Issue Tracking ([email protected])
https://github.com/open5gs/open5gs/issues/3910#issuecomment-2926719317 Exploit, Issue Tracking ([email protected])
https://github.com/user-attachments/files/20362243/Problematic.handover.required.process.zip Exploit ([email protected])
https://vuldb.com/?ctiid.310956 Permissions Required, VDB Entry ([email protected])
https://vuldb.com/?id.310956 Third Party Advisory, VDB Entry ([email protected])
https://vuldb.com/?submit.582269 Third Party Advisory, VDB Entry ([email protected])
https://github.com/open5gs/open5gs/issues/3910 Exploit, Issue Tracking (134c704f-9b21-4f2e-91b3-4a467353bcc0)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For open5gs's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.