CVE-2026-2522

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The manipulation leads to memory corruption. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Una vulnerabilidad de seguridad ha sido detectada en Open5GS hasta la versi\u00f3n 2.7.6. Afecta a una funci\u00f3n desconocida del archivo /src/mme/esm-build.c del componente MME. La manipulaci\u00f3n conduce a corrupci\u00f3n de memoria. Es posible iniciar el ataque remotamente. El exploit ha sido divulgado p\u00fablicamente 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-2026-2522", "lastModified": "2026-06-17T10:31:14.033", "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": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "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-2026-2522", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-17T17:22:05.569638Z", "version": "2.0.3"}}]}, "published": "2026-02-16T00:16:07.550", "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/4283"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/open5gs/open5gs/issues/4283#issue-3807916595"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.346110"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.346110"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.738336"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "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": "2026-04-17T19:18:32.257417+00:00", "value": {"mitigation_remediation": ["Check for and install the latest Open5GS release that includes a fix for the memory corruption in esm-build.c, or apply a vendor\u2011supplied patch if one becomes available.", "If no fix exists yet, isolate the MME service from untrusted external traffic by configuring firewall rules or network segmentation so that only trusted nodes can reach the MME endpoint.", "Enable detailed logging and real\u2011time monitoring for the MME component, and consider deploying mandatory access control mechanisms such as SELinux or AppArmor to contain any potential compromise."], "summary": {"action": "Patch ASAP", "impact": "Remote Code Execution via memory corruption"}, "threat_synthesis": {"affected_systems": "Vendors: Open5GS. Product: the MME component of the Open5GS 5G core network. Versions up to and including 2.7.6 are affected; no patch has been released yet.", "description_and_impact": "The flaw resides in src/mme/esm-build.c in Open5GS versions up to 2.7.6. It allows an attacker to manipulate an unknown function that results in memory corruption, which could enable arbitrary code execution or service disruption and affect the confidentiality, integrity, or availability of the 5G core network. The weakness is classified as CWE-119, a classic buffer access or manipulation vulnerability.", "risk_and_exploitability": "CVSS score 6.9 indicates moderate severity. The EPSS score is less than 1%, suggesting a low exploitation probability, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is remote; an attacker would need to send specially crafted traffic to the MME service to trigger the memory corruption. Because the flaw remains unpatched, systems that expose the MME to external networks face higher risk and should monitor for suspicious activities while awaiting a fix."}}}}, "created": "2026-02-16T09:42:43.386614+00:00", "updated": "2026-04-17T19:30:15.629728+00:00", "vendors": ["open5gs", "open5gs$PRODUCT$open5gs"]}