{"id":"CVE-2026-129105","state":"PUBLISHED","title":"Cudy TR3000 before 2.5.42 pppd Option Injection via net.set_wan L2TP Credentials","description":"Cudy TR3000 before 2.5.42 contains an option injection vulnerability that allows authenticated administrators to inject arbitrary pppd options by embedding quotes and newlines in L2TP credentials. Attackers can submit crafted usernames or passwords to the net.set_wan RPC method, which l2tp.sh writes into a pppd options file, adding options like logfile to the root pppd process.","publishedAt":"2026-11-13T15:38:28.271Z","updatedAt":"2026-11-13T15:38:28.271Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Shenzhen Cudy Technology Co., Ltd. TR3000 1.0"],"affected":[{"vendor":"Shenzhen Cudy Technology Co., Ltd.","product":"TR3000 1.0","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.5.42","versionType":"semver"},{"version":"2.5.42","status":"unaffected","versionType":"semver"}]}],"references":["https://www.cudy.com/en-us/pages/download-center/tr3000-1-0","https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip","https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-pppd-option-injection-via-net-set-wan-l2tp-credentials"],"weaknesses":["CWE-93"],"ingestedAt":"2026-11-13T15:44:06.325Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/129xxx/CVE-2026-129105.json","commit":"576d2b26d866bb59f15658a7b702cf18a922cb02","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-129105","state":"PUBLISHED","datePublished":"2026-11-13T15:38:28.271Z","dateUpdated":"2026-11-13T15:38:28.271Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-11-13T15:31:00.207Z"},"containers":{"cna":{"title":"Cudy TR3000 before 2.5.42 pppd Option Injection via net.set_wan L2TP Credentials","descriptions":[{"lang":"en","value":"Cudy TR3000 before 2.5.42 contains an option injection vulnerability that allows authenticated administrators to inject arbitrary pppd options by embedding quotes and newlines in L2TP credentials. Attackers can submit crafted usernames or passwords to the net.set_wan RPC method, which l2tp.sh writes into a pppd options file, adding options like logfile to the root pppd process."}],"affected":[{"vendor":"Shenzhen Cudy Technology Co., Ltd.","product":"TR3000 1.0","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.5.42","versionType":"semver"},{"version":"2.5.42","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://www.cudy.com/en-us/pages/download-center/tr3000-1-0","tags":["release-notes"],"name":"Cudy TR3000 1.0 Download Center"},{"url":"https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip","tags":["patch"],"name":"Cudy TR3000 Firmware 2.5.42"},{"url":"https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-pppd-option-injection-via-net-set-wan-l2tp-credentials","name":"VulnCheck Advisory: Cudy TR3000 before 2.5.42 pppd Option Injection via net.set_wan L2TP Credentials","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-93","lang":"en","description":"Improper Neutralization of CRLF Sequences ('CRLF Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-11-13T15:38:28.271Z"},"datePublic":"2026-11-13T00:00:00.000Z","x_generator":{"engine":"vulncheck-endgame"}}}}}