CVE-2026-5156

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The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determin\u00f3 una vulnerabilidad en Tenda CH22 1.0.0.1. Esto afecta a la funci\u00f3n formQuickIndex del archivo /goform/QuickIndex del componente Gestor de Par\u00e1metros. Esta manipulaci\u00f3n del argumento mit_linktype provoca un desbordamiento de b\u00fafer basado en pila. El ataque puede llevarse a cabo de forma remota. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado."}], "id": "CVE-2026-5156", "lastModified": "2026-06-17T10:58:30.880", "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-2026-5156", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-31T14:04:19.289779Z", "version": "2.0.3"}}]}, "published": "2026-03-31T00:16:15.303", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_46/README.md"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/780208"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/354188"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/354188/cti"}, {"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"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.1"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "CH22", "source": "cna", "vendor": "Tenda"}, "product": "ch22", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-02T13:52:53.201314+00:00", "value": {"mitigation_remediation": ["Check the Tenda website or support portal for a firmware update that addresses the stack buffer overflow in the Parameter Handler.", "Download and apply the latest firmware to the device following the vendor\u2019s installation instructions.", "Reboot the router after the firmware installation to ensure the update takes effect.", "Verify the new firmware version to confirm the patch has been applied successfully."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Devices utilizing the Tenda CH22 router with firmware version 1.0.0.1 are affected. The vulnerability is confined to the Parameter Handler component of that firmware revision; no other Tenda products or firmware versions are listed as vulnerable.", "description_and_impact": "A stack-based buffer overflow exists in the formQuickIndex function located at /goform/QuickIndex of Tenda CH22 firmware 1.0.0.1. By crafting the mit_linktype parameter, an attacker can overflow a stack buffer, potentially leading to arbitrary code execution or malicious behavior. Because the flaw is in the web interface, the attack can be performed remotely over the network that the router exposes its management interface to.", "risk_and_exploitability": "The CVSS score of 8.7 indicates a high severity vulnerability, while the EPSS score of less than 1% suggests a relatively low probability of exploitation across the broader ecosystem. The flaw is publicly disclosed and exploitable remotely, but the CVE record does not specify whether authentication is required to trigger the overflow. The vulnerability is not yet included in the CISA KEV catalog, yet its potential for remote code execution warrants proactive attention."}}}}, "created": "2026-03-31T19:57:02.943805+00:00", "updated": "2026-04-02T20:22:46.529405+00:00", "vendors": ["tenda", "tenda$PRODUCT$ch22"]}