{"schemaVersion":3,"id":"CVE-2026-6158","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A flaw has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setUpgradeUboot of the file upgrade.so. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.","dates":{"published":"2026-04-13T04:00:19.297Z","modified":"2026-04-16T13:36:44.745Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"CVE.org","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.3,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":7.3,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"CVE.org","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.3,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0206,"percentile":0.81153,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.51,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.0155},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0206,"percentile":0.81153}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0155,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0206,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0206,"percentile":0.81153}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_XYH4CK_IOT_POC","name":"Iot Poc","source":"github","url":"https://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_Overflow","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command ('Command Injection')","description":"The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/77.html"},{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","description":"The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/78.html"}],"affected":[{"vendor":"totolink","product":"n300rh_firmware","name":"n300rh firmware","label":"n300rh_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"6.1c.1353_B20190305","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.1c.1353_B20190305","eol":null,"hubHref":"/vendor/totolink/n300rh"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://vuldb.com/vuln/357038","label":"vuldb.com/vuln/357038","hostname":"vuldb.com","tags":["VDB Entry","Technical Description"]},{"url":"https://vuldb.com/vuln/357038/cti","label":"vuldb.com/vuln/357038/cti","hostname":"vuldb.com","tags":["Signature","Permissions Required"]},{"url":"https://vuldb.com/submit/796426","label":"vuldb.com/submit/796426","hostname":"vuldb.com","tags":["Third Party Advisory"]},{"url":"https://github.com/xyh4ck/iot_poc/tree/main/TOTOLINK/N300RHv4/02_setUpgradeUboot_RCE","label":"github.com/xyh4ck/iot_poc/tree/main/TOTOLINK/N300RHv4/02_setUpgradeUboot_RCE","hostname":"github.com","tags":["Exploit","Patch"]},{"url":"https://www.totolink.net/","label":"www.totolink.net","hostname":"www.totolink.net","tags":["Product"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-04-13T04:00:19.297Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T13:36:44.745Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T23:15:47.466Z","stale":false,"partial":false}}