{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5993", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-04-09T12:49:01.165Z", "datePublished": "2026-04-10T00:15:14.223Z", "dateUpdated": "2026-04-10T00:15:14.223Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-04-10T00:15:14.223Z"}, "title": "Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-78", "lang": "en", "description": "OS Command Injection"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-77", "lang": "en", "description": "Command Injection"}]}], "affected": [{"vendor": "Totolink", "product": "A7100RU", "versions": [{"version": "7.4cu.2313_b20191024", "status": "affected"}], "cpes": ["cpe:2.3:o:totolink:a7100ru_firmware:*:*:*:*:*:*:*:*"], "modules": ["CGI Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wifiOff leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 9.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P", "baseSeverity": "CRITICAL"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "CRITICAL"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 9.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "CRITICAL"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 10, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-04-09T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-04-09T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-04-09T14:54:26.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "LtzHust (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/356547", "name": "VDB-356547 | Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/356547/cti", "name": "VDB-356547 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/792041", "name": "Submit #792041 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md", "tags": ["exploit"]}, {"url": "https://www.totolink.net/", "tags": ["product"]}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wifiOff leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used."}], "id": "CVE-2026-5993", "lastModified": "2026-04-10T01:16:41.743", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "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": 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": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.9, "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": "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: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"}]}, "published": "2026-04-10T01:16:41.743", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/792041"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/356547"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/356547/cti"}, {"source": "cna@vuldb.com", "url": "https://www.totolink.net/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.4cu.2313_b20191024"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A7100RU", "source": "cna", "vendor": "Totolink"}, "product": "a7100ru", "vendor": "totolink"}], "analysis": {"en": {"generated_at": "2026-04-10T02:25:17.182917+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update from Totolink that addresses the CGI handler vulnerability.", "If a patch is not immediately available, disable or block access to the /cgi-bin/cstecgi.cgi endpoint or the guest WiFi configuration interface via router settings or network ACLs.", "Restrict remote administration to trusted IP addresses or networks to reduce the attack surface.", "Monitor router logs for unexpected use of the wifiOff parameter or signs of command execution attempts."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Totolink A7100RU routers running firmware 7.4cu.2313_b20191024. Any device of this model with the specified firmware version is vulnerable.", "description_and_impact": "A flaw in the setWiFiGuestCfg function of the /cgi-bin/cstecgi.cgi CGI handler permits an attacker to inject operating\u2011system commands via the wifiOff argument. This OS command injection can lead to execution of arbitrary commands on the router, effectively providing the attacker with remote code execution capabilities. The vulnerability is associated with CWE-77 and CWE-78 and a publicly available exploit exists.", "risk_and_exploitability": "The CVSS score of 9.3 indicates critical severity, and the attack is remote, allowing exploitation over the network. An exploit is publicly posted, increasing the likelihood of real\u2011world attacks. The EPSS score is not available and the vulnerability is not listed in CISA's KEV catalog, but the combination of high CVSS, public exploit availability, and remote nature results in a high risk that demands prompt remediation."}}}}, "created": "2026-04-10T08:36:20.830180+00:00", "updated": "2026-04-10T09:27:20.607960+00:00", "vendors": ["totolink", "totolink$PRODUCT$a7100ru"]}