{"id":"CVE-2020-25506","kind":"vulnerability","aliases":["CVE-2020-25506"],"related":[],"title":"D-Link DNS-320 Device: D-Link DNS-320 Device Command Injection Vulnerability","description":"D-Link DNS-320 device contains a command injection vulnerability in the sytem_mgr.cgi component that may allow for remote code execution.\n\nCISA required action: Apply updates per vendor instructions.","summary":"The D-Link DNS-320 network storage device has a command injection flaw in its sytem_mgr.cgi component. An attacker can send crafted input to run arbitrary commands on the device.","severity":"critical","cvss":9.8,"epss":0.99968,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"D-Link DNS-320 Device","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["d-link","dns-320","exploited","infrastructure","nas","self-hosted"],"not_affected_if":["no-dns-320-device"],"how_to_check":null,"fix":"Apply updates per vendor instructions; the sources do not name a fixed firmware version.","status":"open","published_at":"2021-02-02T13:15:12+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:33:40+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T21:33:40Z","model":"claude-haiku-5-5","output":{"fix":"Apply updates per vendor instructions; the sources do not name a fixed firmware version.","reach":"unknown","impact":"high","summary":"The D-Link DNS-320 network storage device has a command injection flaw in its sytem_mgr.cgi component. An attacker can send crafted input to run arbitrary commands on the device.","category":"infrastructure","who_cares":["d-link","dns-320","nas","self-hosted"],"confidence":0.7,"needs_auth":"unknown","worst_case":"Attacker runs arbitrary commands on the NAS device remotely","analyst_note":"Exploited in the wild per CISA KEV; find the D-Link advisory and the fixed firmware version and whether auth is required for sytem_mgr.cgi.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["no-dns-320-device"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000452,"input_tokens":2834,"output_tokens":338,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Exploited in the wild per CISA KEV; find the D-Link advisory and the fixed firmware version and whether auth is required for sytem_mgr.cgi.","search":"'-2020':17A,20A '-25506':18A,21A '-320':5A,11A,26A,32B,44B,74C 'action':94C 'allow':87C 'appli':95C 'arbitrari':65B 'attack':58B 'cisa':92C 'code':90C 'command':13A,50B,66B,78C 'compon':56B,84C 'contain':76C 'craft':61B 'cve':16A,19A 'd':2A,8A,23A,29B,41B,71C 'd-link':1A,7A,22A,28B,40B,70C 'devic':6A,12A,47B,69B,75C 'device':27A 'dns':4A,10A,25A,31B,43B,73C 'execut':91C 'exploit':33B 'flaw':52B 'host':38B 'infrastructur':34B 'inject':14A,51B,79C 'input':62B 'instruct':99C 'link':3A,9A,24A,30B,42B,72C 'may':86C 'nas':35B 'network':45B 'per':97C 'remot':89C 'requir':93C 'run':64B 'self':37B 'self-host':36B 'send':60B 'storag':46B 'sytem_mgr.cgi':55B,83C 'updat':96C 'vendor':98C 'vulner':15A,80C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2021-02-02T13:15:12+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2020-25506","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-25506","severity":null,"published_at":"2021-11-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T11:39:18+00:00","note":null},{"source":"epss","external_id":"CVE-2020-25506","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-25506","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2020-25506","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25506","severity":null,"published_at":"2021-02-02T13:15:12+00:00","modified_at":"2026-06-17T03:06:52+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+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"}