{"id":"CVE-2017-12233","kind":"vulnerability","aliases":["CVE-2017-12233"],"related":[],"title":"Cisco IOS software: Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability","description":"Multiple vulnerabilities in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of crafted CIP packets destined to an affected device. An attacker could exploit these vulnerabilities by sending crafted CIP packets to be processed by an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuz95334.","summary":"Cisco IOS software has a flaw in its Common Industrial Protocol (CIP) feature that lets an unauthenticated remote attacker reload the device. The result is a denial of service that takes the router or switch offline.","severity":"high","cvss":7.8,"epss":0.0707,"exploited":true,"exploited_at":"2022-03-03T00:00:00+00:00","products":[{"name":"Cisco IOS software","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["cisco","exploited","infrastructure","ios","network-gear"],"not_affected_if":["cip-disabled","default-config"],"how_to_check":null,"fix":"Apply the update from Cisco's advisory for CVE-2017-12233; the sources do not name the fixed version. Disable the CIP feature if it is not needed.","status":"open","published_at":"2017-09-29T01:34:48+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:24:15+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:24:15Z","model":"claude-haiku-5-5","output":{"fix":"Apply the update from Cisco's advisory for CVE-2017-12233; the sources do not name the fixed version. Disable the CIP feature if it is not needed.","reach":"network","impact":"low","summary":"Cisco IOS software has a flaw in its Common Industrial Protocol (CIP) feature that lets an unauthenticated remote attacker reload the device. The result is a denial of service that takes the router or switch offline.","category":"infrastructure","who_cares":["cisco","ios","network-gear"],"confidence":0.6,"needs_auth":"no","worst_case":"Remote attacker reloads the device, causing denial of service","analyst_note":"Find the Cisco advisory for CVE-2017-12233 to get affected and fixed IOS versions and the exact CIP enablement setting.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["cip-disabled","default-config"],"user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.000463,"input_tokens":2868,"output_tokens":352,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-12233':18A,21A '-2017':17A,20A '12.4':83C '15.6':85C 'affect':95C,122C,140C,152C 'allow':87C,146C 'attack':50B,91C,125C,148C 'bug':162C 'caus':93C,150C 'cip':43B,78C,117C,133C 'cisco':1A,4A,22A,25B,32B,81C,161C 'common':7A,40B,75C 'condit':106C,160C 'could':86C,126C,145C 'craft':116C,132C 'cscuz95334':164C 'cve':16A,19A 'denial':12A,58B,102C 'denial-of-servic':11A 'destin':119C 'devic':53B,96C,123C,141C,153C 'dos':105C,159C 'due':110C 'exploit':26B,127C,144C 'featur':44B,79C 'flaw':37B 'gear':31B 'id':163C 'implement':72C 'improp':113C 'industri':8A,41B,76C 'infrastructur':27B 'io':2A,5A,28B,33B,82C 'ios':23A 'let':46B 'multipl':68C 'network':30B 'network-gear':29B 'offlin':67B 'packet':118C,134C 'pars':114C 'process':137C 'protocol':9A,42B,77C 'reload':51B,98C,155C 'remot':49B,90C 'request':10A 'result':55B,99C,156C 'router':64B 'send':131C 'servic':14A,60B,104C 'softwar':3A,6A,34B 'software':24A 'success':143C 'switch':66B 'take':62B 'unauthent':48B,89C 'vulner':15A,69C,108C,129C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-09-29T01:34:48+00:00","kev":{"dateAdded":"2022-03-03","dueDate":"2022-03-24","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2017-12233","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-12233","severity":null,"published_at":"2022-03-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T19:35:25+00:00","note":null},{"source":"epss","external_id":"CVE-2017-12233","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-12233","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-2017-12233","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12233","severity":null,"published_at":"2017-09-29T01:34:48+00:00","modified_at":"2026-06-17T01:02:56+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"}