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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*", "matchCriteriaId": "DD39B647-3419-4C6D-A6A2-30F40822A27D", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*", "matchCriteriaId": "7F723A73-4B32-4F9E-B5DA-80134D4711C1", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_b20221024. Affected by this issue is the function setIptvCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument vlanPriLan3 leads to command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used."}, {"lang": "es", "value": "Una vulnerabilidad de seguridad ha sido detectada en Totolink A3300R 17.0.0cu.557_b20221024. Afectada por este problema es la funci\u00f3n setIptvCfg del archivo /cgi-bin/cstecgi.cgi. La manipulaci\u00f3n del argumento vlanPriLan3 conduce a inyecci\u00f3n de comandos. La explotaci\u00f3n remota del ataque es posible. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado."}], "id": "CVE-2026-5178", "lastModified": "2026-04-29T01:00:01.613", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"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": "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": 2.1, "baseSeverity": "LOW", "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:L/VI:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-03-31T04:16:45.660", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_vlanPriLan3_cmd_inject"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/779147"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/354246"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/354246/cti"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.totolink.net/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-77"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "17.0.0cu.557_b20221024"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A3300R", "source": "cna", "vendor": "Totolink"}, "product": "a3300r", "vendor": "totolink"}], "analysis": {"en": {"generated_at": "2026-04-06T17:44:40.311914+00:00", "value": {"mitigation_remediation": ["Update the router to the latest firmware available from the Totolink website, ensuring version removal of the command injection bug.", "If no firmware update is possible, block external access to the /cgi-bin/cstecgi.cgi endpoint with firewall rules or disable Internet management features on the router.", "Ensure that the vlanPriLan3 parameter or similar inputs are validated and sanitized on the device, or monitor logs for suspicious command injection attempts.", "Verify the patch by attempting to execute a harmless test command through the vulnerable endpoint and confirming it is no longer processed."], "summary": {"action": "Patch ASAP", "impact": "Remote Command Execution via command injection"}, "threat_synthesis": {"affected_systems": "The issue affects Totolink A3300R routers running firmware version 17.0.0cu.557_b20221024. Any device operating this firmware, or earlier builds that have not applied subsequent security fixes, is vulnerable.", "description_and_impact": "A command injection flaw exists in the setIptvCfg function of /cgi-bin/cstecgi.cgi on affected Totolink A3300R routers. Manipulating the vlanPriLan3 parameter lets an attacker embed and execute arbitrary operating\u2011system commands, granting complete control over the device and potentially exposing connected network resources. The vulnerability is categorized as CWE\u201174 and CWE\u201177 and can lead to compromise of confidentiality, integrity, and availability.", "risk_and_exploitability": "The CVSS score of 5.3 indicates moderate severity, and the EPSS score of 1% suggests low overall exploitation probability. The vulnerability is not listed in the CISA KEV catalog, but a publicly available exploit demonstrates that remote attackers can trigger the injection by sending crafted requests to the device\u2019s web interface. Because authentication requirements are not specified, the risk remains that unauthenticated or authenticated attackers could exploit the flaw without additional credentials."}}}}, "created": "2026-03-31T19:56:20.338452+00:00", "updated": "2026-04-07T08:08:10.486305+00:00", "vendors": ["totolink", "totolink$PRODUCT$a3300r"]}