CVE-2026-2523

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The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se detect\u00f3 una vulnerabilidad en Open5GS hasta la versi\u00f3n 2.7.6. El elemento afectado es la funci\u00f3n smf_gn_handle_create_pdp_context_request del archivo /src/smf/gn-handler.c del componente SMF. La manipulaci\u00f3n resulta en una aserci\u00f3n alcanzable. Es posible lanzar el ataque de forma remota. El exploit ahora es p\u00fablico y puede ser utilizado. Se inform\u00f3 al proyecto del problema con antelaci\u00f3n a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."}], "id": "CVE-2026-2523", "lastModified": "2026-06-17T10:31:14.177", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2523", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-17T17:15:15.409228Z", "version": "2.0.3"}}]}, "published": "2026-02-16T01:15:53.767", "references": [{"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/open5gs/open5gs/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/open5gs/open5gs/issues/4285"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/open5gs/open5gs/issues/4285#issue-3809055236"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.346111"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.346111"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.738342"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.7.6"}}], "product": "open5gs", "vendor": "open5gs"}], "analysis": {"en": {"generated_at": "2026-04-18T18:00:40.963896+00:00", "value": {"mitigation_remediation": ["Upgrade to the latest Open5GS release that contains a fix for the assertion.", "If an immediate upgrade is not feasible, restrict external access to the SMF interfaces using firewall rules or by placing the SMF behind a VPN to limit exposure to malformed requests.", "Enable logging of SMF crashes and monitor logs for assertion failure messages; consider adding intrusion detection rules for anomalous SMF traffic."], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The vulnerability is present in all Open5GS releases up to and including version 2.7.6. It affects the SMF\u2019s smf_gn_handle_create_pdp_context_request function located in gn-handler.c. Any deployment of Open5GS 2.7.6 or earlier is impacted, while newer releases are not documented to contain this issue.", "description_and_impact": "A malformed Create PDP Context request triggers a reachable assertion in the Open5GS SMF component, causing the SMF process to crash. The flaw results from insufficient verification of the request data, aligned with CWE\u2011617, and leads to a denial of service for the SMF service.", "risk_and_exploitability": "The CVSS score of 6.9 indicates a medium severity flaw, and the EPSS score of less than 1\u202f% suggests that exploitation is currently infrequent. The flaw is not listed in the CISA KEV catalogue, implying no confirmed active exploitation at the time of analysis. The publicly available exploit demonstrates that the assertion can be triggered remotely through the SMF interface, providing attackers the opportunity to bring the service down without local privileges."}}}}, "created": "2026-02-16T09:42:42.161246+00:00", "updated": "2026-04-18T18:15:06.567068+00:00", "vendors": ["open5gs", "open5gs$PRODUCT$open5gs"]}