{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2014-125122","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2025-07-30T14:54:06.838Z","datePublished":"2025-07-31T14:57:59.666Z","dateUpdated":"2026-04-07T14:03:26.941Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["tmUnblock.cgi"],"product":"WRT120N","vendor":"Linksys","versions":[{"status":"affected","version":"1.0.07"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:linksys:wrt120n:1.0.07:*:*:*:*:*:*:*","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"Craig Heffner"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>A stack-based buffer overflow vulnerability exists in the <code>tmUnblock.cgi</code> endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long <code>TM_Block_URL</code> parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials.<br></p>"}],"value":"A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials."}],"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100 Overflow Buffers"}]},{"capecId":"CAPEC-137","descriptions":[{"lang":"en","value":"CAPEC-137 Parameter Injection"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-04-07T14:03:26.941Z"},"references":[{"tags":["exploit"],"url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/admin/http/linksys_tmunblock_admin_reset_bof.rb"},{"tags":["exploit"],"url":"https://www.exploit-db.com/exploits/31758"},{"tags":["technical-description","exploit"],"url":"https://web.archive.org/web/20210424073058/http://www.devttys0.com/2014/02/wrt120n-fprintf-stack-overflow/"},{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/linksys-wrt120n-stack-based-buffer-overflow-admin-password-reset"}],"source":{"discovery":"UNKNOWN"},"title":"Linksys WRT120N tmUnblock.cgi Stack-Based Buffer Overflow Admin Password Reset","x_generator":{"engine":"vulncheck"},"datePublic":"2014-02-19T00:00:00.000Z"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-31T17:57:59.527382Z","id":"CVE-2014-125122","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-07-31T17:58:15.493Z"}}]}}