CVE-2026-5830

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The exploit is publicly available and might be used."}, {"lang": "es", "value": "Una vulnerabilidad fue identificada en Tenda AC15 15.03.05.18. Esto afecta la funci\u00f3n websGetVar del archivo /goform/SysToolChangePwd. Tal manipulaci\u00f3n del argumento oldPwd/newPwd/cfmPwd conduce a desbordamiento de b\u00fafer basado en pila. El ataque puede ser ejecutado remotamente. El exploit est\u00e1 disponible p\u00fablicamente y podr\u00eda ser usado."}], "id": "CVE-2026-5830", "lastModified": "2026-07-24T09:10:00.153", "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-2026-5830", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-09T14:54:03.798621Z", "version": "2.0.3"}}]}, "published": "2026-04-09T02:16:17.920", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit"], "url": "https://files.catbox.moe/xrk8jb.zip"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/789178"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/356277"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/356277/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"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "15.03.05.18"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "AC15", "source": "cna", "vendor": "Tenda"}, "product": "ac15", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-09T03:20:59.326635+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update from Tenda that addresses the websGetVar stack overflow.", "If an immediate patch is unavailable, limit remote management to trusted IP addresses or disable it entirely, and monitor device logs for anomalous password change attempts.", "Keep the router isolated from critical infrastructure and ensure the default credentials are changed after each update."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution via stack-based buffer overflow"}, "threat_synthesis": {"affected_systems": "The affected hardware is the Tenda AC15 router running firmware version 15.03.05.18. Users deploying this model with that firmware are at risk; newer firmware revisions may have been patched.", "description_and_impact": "The flaw resides in the websGetVar handler for changing passwords, where unsafe handling of the oldPwd, newPwd, and cfmPwd parameters permits a stack-based buffer overflow. This overflow can enable an attacker to execute arbitrary code on the device, compromising its confidentiality, integrity, and availability. The weakness is a classic stack corruption identified as CWE\u2011119 and CWE\u2011121.", "risk_and_exploitability": "With a CVSS base score of 8.7, the vulnerability is considered high severity. No EPSS score is posted, but the exploit is publicly available and remote attackers can trigger it from outside the local network. The vulnerability does not appear in the CISA KEV catalog yet, but the presence of a public exploit increases the likelihood of real-world attacks."}}}}, "created": "2026-04-09T08:15:52.475761+00:00", "updated": "2026-04-09T08:25:18.787830+00:00", "vendors": ["tenda", "tenda$PRODUCT$ac15"]}