{"id":"CVE-2026-10135","kind":"vulnerability","aliases":["CVE-2026-10135"],"related":[],"title":"TOTOLINK X2000R router: batchupg flaw lets an authenticated user run commands","description":"A OS command injection vulnerability exists in the batchupg functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.","summary":"TOTOLINK X2000R firmware B20250421.1327 has an OS command injection in batchupg. A logged-in admin can upload a file with a crafted filename (/boafrm/formUploadFile), trigger /boafrm/formBuploadSetting, and the filename reaches system() unsanitised, giving command execution as the router. Found by Cisco Talos. The vendor acknowledged the report in June 2026 but no fixed firmware is published.","severity":"critical","cvss":9.1,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"X2000R","fixed":[],"affected":"TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327","ecosystem":"firmware"}],"ecosystems":[],"tags":["infrastructure","router","self-hosted","totolink","x2000r"],"not_affected_if":["auth-required","no-web-admin-exposure","other-firmware-versions","wan-admin-disabled"],"how_to_check":"In the router web UI (Status/Upgrade page) read the firmware version; TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is confirmed vulnerable. Other builds are untested. Also check whether the web admin is reachable from the WAN side.","fix":"No fixed version published as of 2026-10-23 (Talos lists no patch). Mitigate: turn off remote/WAN web administration, restrict admin to a trusted LAN, change default credentials, and watch totolink.net for new X2000R firmware.","status":"open","published_at":"2026-10-20T21:17:16+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","triaged_at":"2026-10-23T22:39:17+00:00","updated_at":"2026-10-23T23:18:06+00:00","category":"infrastructure","confidence":0.85,"triage":{"at":"2026-10-23T22:39:17Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"TOTOLINK X2000R router: batchupg flaw lets an authenticated user run commands","impact":"high","summary":"A TOTOLINK X2000R router firmware build has an OS command injection in its batchupg function. An attacker who has logged in to the router's web interface can send a crafted HTTP request and run arbitrary code on the device.","category":"infrastructure","who_cares":["totolink","x2000r","router","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker runs arbitrary commands as root on the router.","analyst_note":"Check the vendor (TOTOLINK) for a firmware fix and confirm the admin interface reach; the NVD entry gives no fixed version.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["other-firmware-versions","no-web-admin-exposure"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000472,"input_tokens":2943,"output_tokens":356,"severity_before":"critical"},"analyst_status":"done","analyst_note":"Check the vendor (TOTOLINK) for a firmware fix and confirm the admin interface reach; the NVD entry gives no fixed version.","search":"'-10135':14A,17A '-2026':13A,16A '/boafrm/formbuploadsetting':52B '/boafrm/formuploadfile':50B '0.0':102C '2026':76B 'acknowledg':71B 'admin':41B 'arbitrari':112C 'attack':116C 'authent':8A,120C 'b20250421.1327':29B,103C 'batchupg':4A,36B,91C 'cisco':67B 'code':113C 'command':11A,33B,60B,85C 'craft':48B,106C 'cve':12A,15A 'execut':61B,114C 'exist':88C 'file':45B 'filenam':49B,55B 'firmwar':28B,80B 'fix':79B 'flaw':5A 'found':65B 'function':92C 'gh':100C 'give':59B 'host':23B 'http':107C,121C 'infrastructur':19B 'inject':34B,86C 'june':75B 'lead':110C 'let':6A 'log':39B 'logged-in':38B 'make':118C 'os':32B,84C 'publish':82B 'reach':56B 'report':73B 'request':108C,122C 'router':3A,20B,64B 'run':10A 'self':22B 'self-host':21B 'special':105C 'system':57B 'talo':68B 'totolink':1A,24B,26B,98C 'totolink-x2000r-gh-v1':97C 'trigger':51B,124C 'unsanitis':58B 'upload':43B 'user':9A 'v1':101C 'vendor':70B 'version':95C 'vulner':87C,126C 'x2000r':2A,18A,25B,27B,94C,99C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T21:17:16+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvss_by":"talos-cna@cisco.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-10135","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10135","severity":null,"published_at":"2026-10-20T21:17:16+00:00","modified_at":"2026-10-22T15:31:24+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","fetched_at":"2026-10-23T22:28:58+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-10135:410","url":null,"severity":null,"published_at":"2026-10-23T23:18:06+00:00","modified_at":"2026-10-23T23:18:06+00:00","first_seen_at":"2026-10-23T23:18:06+00:00","fetched_at":"2026-10-23T23:18:06+00:00","note":"Read Talos TALOS-2026-2435: authenticated OS command injection (CWE-78) via uploaded filename reaching system() in batchupg; vendor acked 2026-06-25, no patch or fixed version published; no exploitation seen, no public PoC (partial UDP snippet only), no social chatter."}],"documents":[{"id":1879,"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2026-2435","title":"TALOS-2026-2435 Totolink X2000R batchupg OS command injection","kind":"advisory","source":"analyst","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}