CVE-2026-2906

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The exploit has been released to the public and may be used for attacks."}, {"lang": "es", "value": "Se ha descubierto un fallo de seguridad en Tenda HG9 300001138 que afecta a una funci\u00f3n desconocida del archivo /boaform/formSamba del componente Samba Configuration Endpoint. Manipularel argumento sambaCap provoca un desbordamiento de b\u00fafer basado en pila. El ataque puede ser lanzado en remoto. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado para ataques."}], "id": "CVE-2026-2906", "lastModified": "2026-06-17T10:32:00.580", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.4, "baseSeverity": "HIGH", "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": "LOW", "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:L/UI:N/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2906", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-24T15:38:13.838475Z", "version": "2.0.3"}}]}, "published": "2026-02-22T02:16:57.493", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://github.com/QIU-DIE/cve-nneeww/issues/8"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.347215"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.347215"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.755193"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "300001138"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "HG9", "source": "cna", "vendor": "Tenda"}, "product": "hg9", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-17T16:37:32.934146+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update released by Tenda that addresses the stack overflow in the Samba configuration endpoint.", "If a firmware update is not yet available, disable or remove the /boaform/formSamba endpoint or prevent remote access to it via firewall or access control settings.", "Configure network segmentation or firewall rules to restrict remote management traffic to trusted IP addresses only."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The affected devices are Tenda HG9 routers running firmware version 300001138. The vulnerable component is accessed via the /boaform/formSamba endpoint of the router\u2019s administration interface.", "description_and_impact": "A stack-based buffer overflow exists in the Samba configuration endpoint of the Tenda HG9 firmware, where manipulation of the sambaCap parameter overflows the stack. This flaw can allow an attacker to execute arbitrary code, representing a high severity vulnerability according to CVSS. The weakness is identified as CWE-119 (Improper Restriction of Operations within the Bounds of a Buffer) and CWE-121 (Stack-based Buffer Overwrite).", "risk_and_exploitability": "The CVSS score of 8.7 indicates severe impact, while the EPSS score of less than 1% shows a low but non-zero likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog, but public exploits have already been released, enabling remote attackers to trigger the overflow and potentially gain full control over the device."}}}}, "created": "2026-02-23T14:29:45.098346+00:00", "updated": "2026-04-17T16:45:15.824605+00:00", "vendors": ["tenda", "tenda$PRODUCT$hg9"]}