{"id":"CVE-2026-129103","kind":"vulnerability","aliases":["CVE-2026-129103"],"related":[],"title":"Cudy TR3000 router: admin command injection grants root via reboot_time","description":"Cudy TR3000 before 2.5.42 contains a command injection vulnerability that allows authenticated administrators to execute commands as root by injecting newlines into reboot_time. Attackers can submit a reboot_time value followed by a newline and crontab line, which /etc/init.d/autoreboot writes to the root crontab for crond to run.","summary":"Cudy TR3000 routers before firmware 2.5.42 let an authenticated administrator inject newlines into the reboot_time setting. The injected text is written to the root crontab, so commands run as root.","severity":"high","cvss":8.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cudy-tr3000","infrastructure","openwrt-based","routers","self-hosted"],"not_affected_if":["firmware-2.5.42-or-later","no-admin-access-by-untrusted-users"],"how_to_check":"- Check the router's firmware version in the admin web interface (System or status page) and compare it with `2.5.42`.\n- Confirm whether the admin interface is reachable from the internet or only from the local network.","fix":"- Cudy TR3000: firmware `2.5.42` or later, per the advisory.","status":"open","published_at":"2026-11-13T16:19:00+00:00","first_seen_at":"2026-11-13T16:47:34+00:00","triaged_at":"2026-11-13T16:48:23+00:00","updated_at":"2026-11-13T16:48:23+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-13T16:48:23Z","model":"claude-haiku-5-5","output":{"fix":"- Cudy TR3000: firmware `2.5.42` or later, per the advisory.","reach":"network","title":"Cudy TR3000 router: admin command injection grants root via reboot_time","impact":"high","summary":"Cudy TR3000 routers before firmware 2.5.42 let an authenticated administrator inject newlines into the reboot_time setting. The injected text is written to the root crontab, so commands run as root.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["cudy-tr3000","routers","openwrt-based","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"Attacker runs commands as root on the router","analyst_note":"","how_to_check":"- Check the router's firmware version in the admin web interface (System or status page) and compare it with `2.5.42`.\n- Confirm whether the admin interface is reachable from the internet or only from the local network.","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["firmware-2.5.42-or-later","no-admin-access-by-untrusted-users"],"who_is_affected":"Only devices running a Cudy TR3000 firmware older than 2.5.42 are exposed, and the attacker must already hold administrator credentials for the router's web interface. Routers used by a team or site as the network gateway are the ones to check; a device that cannot be reached by untrusted users is lower risk.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000726,"input_tokens":4589,"output_tokens":534,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-129103':14A,17A '-2026':13A,16A '/etc/init.d/autoreboot':99C '2.5.42':34B,63C 'admin':4A 'administr':38B,72C 'allow':70C 'attack':84C 'authent':37B,71C 'base':24B 'command':5A,56B,66C,75C 'contain':64C 'crond':106C 'crontab':54B,96C,104C 'cudi':1A,19B,29B,60C 'cudy-tr3000':18B 'cve':12A,15A 'execut':74C 'firmwar':33B 'follow':91C 'grant':7A 'host':28B 'infrastructur':21B 'inject':6A,39B,47B,67C,79C 'let':35B 'line':97C 'newlin':40B,80C,94C 'openwrt':23B 'openwrt-bas':22B 'reboot':10A,43B,82C,88C 'root':8A,53B,59B,77C,103C 'router':3A,25B,31B 'run':57B,108C 'self':27B 'self-host':26B 'set':45B 'submit':86C 'text':48B 'time':11A,44B,83C,89C 'tr3000':2A,20B,30B,61C 'valu':90C 'via':9A 'vulner':68C 'write':100C 'written':50B","nicknames":[],"mitigations":[],"who_affected":"Only devices running a Cudy TR3000 firmware older than 2.5.42 are exposed, and the attacker must already hold administrator credentials for the router's web interface. Routers used by a team or site as the network gateway are the ones to check; a device that cannot be reached by untrusted users is lower risk.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["cudytr3000","high","infrastructure","openwrtbased","routers","selfhosted"],"campaign_type":null,"search_a":"'-129103':14A,17A '-2026':13A,16A 'admin':4A 'command':5A 'cudi':1A 'cve':12A,15A 'grant':7A 'inject':6A 'reboot':10A 'root':8A 'router':3A 'time':11A 'tr3000':2A 'via':9A","search_b":"'2.5.42':34B 'administr':38B 'authent':37B 'base':24B 'command':56B 'crontab':54B 'cudi':19B,29B 'cudy-tr3000':18B 'firmwar':33B 'host':28B 'infrastructur':21B 'inject':39B,47B 'let':35B 'newlin':40B 'openwrt':23B 'openwrt-bas':22B 'reboot':43B 'root':53B,59B 'router':25B,31B 'run':57B 'self':27B 'self-host':26B 'set':45B 'text':48B 'time':44B 'tr3000':20B,30B 'written':50B","search_c":"'/etc/init.d/autoreboot':99C '2.5.42':63C 'administr':72C 'allow':70C 'attack':84C 'authent':71C 'command':66C,75C 'contain':64C 'crond':106C 'crontab':96C,104C 'cudi':60C 'execut':74C 'follow':91C 'inject':67C,79C 'line':97C 'newlin':80C,94C 'reboot':82C,88C 'root':77C,103C 'run':108C 'submit':86C 'time':83C,89C 'tr3000':61C 'valu':90C 'vulner':68C 'write':100C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-13T16:19:00+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-129103","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129103","severity":null,"published_at":"2026-11-13T16:19:00+00:00","modified_at":"2026-11-13T16:19:00+00:00","first_seen_at":"2026-11-13T16:47:34+00:00","fetched_at":"2026-11-13T16:47:34+00:00","note":null}],"documents":[{"id":147661,"url":"https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}