{"id":"CVE-2026-112373","kind":"vulnerability","aliases":["CVE-2026-112373"],"related":[],"title":"H3C Magic NX15 router: remote stack buffer overflow in usrlist","description":"A security vulnerability has been detected in H3C Magic NX15 NX15V100R017. This impacts the function sub_416874 of the file /usr/bin/usrlist. Such manipulation leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.","summary":"H3C Magic NX15 firmware V100R017 has a stack-based buffer overflow in the function sub_416874 of /usr/bin/usrlist. A remote attacker can trigger it to corrupt memory on the device, and public exploit code exists.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["firmware","h3c","infrastructure","magic-nx15","router"],"not_affected_if":[],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-20T00:17:30+00:00","first_seen_at":"2026-10-23T21:57:19+00:00","triaged_at":"2026-10-25T03:44:47+00:00","updated_at":"2026-10-25T03:44:47+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-10-25T03:44:46Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"network","title":"H3C Magic NX15 router: remote stack buffer overflow in usrlist","impact":"high","summary":"H3C Magic NX15 firmware V100R017 has a stack-based buffer overflow in the function sub_416874 of /usr/bin/usrlist. A remote attacker can trigger it to corrupt memory on the device, and public exploit code exists.","category":"infrastructure","nicknames":[],"who_cares":["h3c","magic-nx15","router","firmware"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Remote attacker may overwrite memory and potentially run code on the device","analyst_note":"Check the vendor advisory or H3C security notice for a fixed firmware version and whether the attack needs authentication; NVD record alone gives no fix or exposure detail.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Owners of H3C Magic NX15 devices running firmware V100R017 are affected. The sources do not say which configurations or network exposure are required, so unknown whether a default install is reachable.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000551,"input_tokens":3334,"output_tokens":435,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-112373':13A,16A '-2026':12A,15A '/usr/bin/usrlist':42B,80C '416874':40B,76C 'attack':45B,96C 'base':33B,87C 'buffer':7A,34B,88C 'code':58B 'contact':111C 'corrupt':50B 'cve':11A,14A 'detect':65C 'devic':54B 'disclos':102C 'disclosur':115C 'earli':112C 'exist':59B 'exploit':57B,99C 'file':79C 'firmwar':17B,27B 'function':38B,74C 'h3c':1A,18B,24B,67C 'impact':72C 'infrastructur':19B 'launch':94C 'lead':83C 'magic':2A,21B,25B,68C 'magic-nx15':20B 'manipul':82C 'may':105C 'memori':51B 'nx15':3A,22B,26B,69C 'nx15v100r017':70C 'overflow':8A,35B,89C 'possibl':92C 'public':56B,103C 'remot':5A,44B,97C 'router':4A,23B 'secur':61C 'stack':6A,32B,86C 'stack-bas':31B,85C 'sub':39B,75C 'trigger':47B 'use':107C 'usrlist':10A 'v100r017':28B 'vendor':109C 'vulner':62C","nicknames":[],"mitigations":[],"who_affected":"Owners of H3C Magic NX15 devices running firmware V100R017 are affected. The sources do not say which configurations or network exposure are required, so unknown whether a default install is reachable.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T00:17:30+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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","cvss_by":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112373","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112373","severity":null,"published_at":"2026-10-20T00:17:30+00:00","modified_at":"2026-10-20T19:27:34+00:00","first_seen_at":"2026-10-23T21:57:19+00:00","fetched_at":"2026-10-23T22:28:57+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}