{"id":"CVE-2017-9822","kind":"vulnerability","aliases":["CVE-2017-9822"],"related":[],"title":"DotNetNuke (DNN) DotNetNuke (DNN): DotNetNuke (DNN) Remote Code Execution Vulnerability","description":"DotNetNuke (DNN) contains a vulnerability that may allow for remote code execution via cookie deserialization.\n\nCISA required action: Apply updates per vendor instructions.","summary":"DotNetNuke (DNN), a .NET web content management system, deserializes untrusted data from a cookie, letting a remote attacker run code on the server. CISA lists it as actively exploited and linked to ransomware.","severity":"critical","cvss":8.8,"epss":0.94789,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"DotNetNuke (DNN) DotNetNuke (DNN)","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["asp.net","dnn","dotnetnuke","exploited","package","ransomware","self-hosted","windows"],"not_affected_if":["not-dnn"],"how_to_check":null,"fix":"Apply the vendor update for DotNetNuke per vendor instructions; the sources do not name the fixed version.","status":"open","published_at":"2017-07-20T12:29:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:33:37+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-23T21:33:37Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor update for DotNetNuke per vendor instructions; the sources do not name the fixed version.","reach":"internet","impact":"high","summary":"DotNetNuke (DNN), a .NET web content management system, deserializes untrusted data from a cookie, letting a remote attacker run code on the server. CISA lists it as actively exploited and linked to ransomware.","category":"package","who_cares":["dotnetnuke","dnn","asp.net","windows","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker runs code on the web server via crafted cookie","analyst_note":"Find the fixed DNN version and a cookie-based check from the vendor advisory or the KEV/NVD entry for CVE-2017-9822.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["not-dnn"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000459,"input_tokens":2857,"output_tokens":346,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Find the fixed DNN version and a cookie-based check from the vendor advisory or the KEV/NVD entry for CVE-2017-9822.","search":"'-2017':12A,15A '-9822':13A,16A 'action':81C 'activ':58B 'allow':71C 'appli':82C 'asp.net':21B 'attack':48B 'cisa':54B,79C 'code':8A,50B,74C 'contain':66C 'content':36B 'cooki':44B,77C 'cve':11A,14A 'data':41B 'deseri':39B,78C 'dnn':2A,4A,6A,18A,20A,22B,32B,65C 'dotnetnuk':1A,3A,5A,23B,31B,64C 'dotnetnuke':17A,19A 'execut':9A,75C 'exploit':24B,59B 'host':29B 'instruct':86C 'let':45B 'link':61B 'list':55B 'manag':37B 'may':70C 'net':34B 'packag':25B 'per':84C 'ransomwar':26B,63B 'remot':7A,47B,73C 'requir':80C 'run':49B 'self':28B 'self-host':27B 'server':53B 'system':38B 'untrust':40B 'updat':83C 'vendor':85C 'via':76C 'vulner':10A,68C 'web':35B 'window':30B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-07-20T12:29:00+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2017-9822","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-9822","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":"2026-10-25T13:39:32+00:00","note":null},{"source":"epss","external_id":"CVE-2017-9822","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-9822","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-2017-9822","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-9822","severity":null,"published_at":"2017-07-20T12:29:00+00:00","modified_at":"2026-06-17T01:28:59+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"}