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{"analysis": {"en": {"generated_at": "2026-04-18T00:48:57.550224+00:00", "value": {"mitigation_remediation": ["Apply the official Open5GS patch that fixes the assertion in the sgwc_s5c_handle_create_bearer_request function.", "If a patch is not yet available, upgrade to the newest Open5GS release that contains the fix or apply the source\u2011level patch provided by the project.", "Configure network controls or firewall rules to restrict access to the S5c interface to trusted peers until a secure version is deployed."], "summary": {"action": "Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Open5GS implementations up to and including version 2.7.6 are affected. The flaw resides in the sgwc_s5c_handle_create_bearer_request component, which processes CreateBearerRequest messages exchanged over the S5c interface.", "description_and_impact": "The vulnerability is an assertion failure in the CreateBearerRequest handler of Open5GS. When a specially crafted request is processed, the assertion is triggered, causing the system to terminate or become unstable. This can lead to a denial\u2011of\u2011service condition for the affected control plane instance, allowing a remote attacker to interrupt network service for connected users.", "risk_and_exploitability": "The vulnerability carries a CVSS base score of 6.9 and an EPSS score below 1%, indicating a low but non\u2011zero likelihood of exploitation. Although it is not listed in CISA\u2019s KEV catalogue, the issue has a publicly available exploit. The attack likely proceeds over the network by sending a malformed CreateBearerRequest to the Open5GS instance, exploiting the assertion to crash the process."}}}}, "created": "2026-02-02T09:26:13.161607+00:00", "updated": "2026-04-18T01:00:11.622829+00:00", "vendors": ["open5gs", "open5gs$PRODUCT$open5gs"]}