{"id":"CVE-2010-3035","kind":"vulnerability","aliases":["CVE-2010-3035"],"related":[],"title":"Cisco IOS XR: Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability","description":"Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announcement, as demonstrated in the wild in August 2010 with attribute type code 99, aka Bug ID CSCti62211.","summary":"Cisco IOS XR routers running BGP can be crashed or disrupted by a remote attacker who sends crafted BGP traffic. The attacker gets a denial of service, not code execution or data access.","severity":"high","cvss":7.5,"epss":0.05668,"exploited":true,"exploited_at":"2022-03-25T00:00:00+00:00","products":[{"name":"Cisco IOS XR","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["bgp","cisco","exploited","infrastructure","ios-xr","network-operators"],"not_affected_if":["bgp-not-configured","non-ios-xr-platforms"],"how_to_check":null,"fix":"Apply the Cisco IOS XR update referenced by the vendor advisory (the sources do not name the fixed version).\nCheck the advisory at the CISA KEV link for the vendor instructions.","status":"open","published_at":"2010-08-30T21:00:12+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:22:04+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:22:04Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Cisco IOS XR update referenced by the vendor advisory (the sources do not name the fixed version).\nCheck the advisory at the CISA KEV link for the vendor instructions.","reach":"network","impact":"medium","summary":"Cisco IOS XR routers running BGP can be crashed or disrupted by a remote attacker who sends crafted BGP traffic. The attacker gets a denial of service, not code execution or data access.","category":"infrastructure","who_cares":["cisco","ios-xr","bgp","network-operators"],"confidence":0.6,"needs_auth":"no","worst_case":"Router crashes or stops routing, causing a network outage","analyst_note":"Find the Cisco advisory for CVE-2010-3035 to get affected and fixed IOS XR versions and the detection method; the sources only give the KEV entry and EPSS score.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["bgp-not-configured","non-ios-xr-platforms"],"user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.000478,"input_tokens":2841,"output_tokens":388,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2010':17A,20A '-3035':18A,21A '2010':109C '3.4.0':71C '3.9.1':73C '99':114C 'access':67B 'aka':115C 'allow':86C 'announc':101C 'attack':49B,56B,88C 'attribut':84C,111C 'august':108C 'bgp':10A,25B,40B,53B,75C 'border':7A 'bug':116C 'caus':90C 'cisco':1A,4A,22A,26B,35B,68C 'code':63B,113C 'craft':52B,99C 'crash':43B 'cscti62211':118C 'cve':16A,19A 'data':66B 'demonstr':103C 'denial':12A,59B,92C 'denial-of-servic':11A 'disrupt':45B 'enabl':77C 'execut':64B 'exploit':27B 'gateway':8A 'get':57B 'handl':81C 'id':117C 'infrastructur':28B 'io':2A,5A,30B,36B,69C 'ios':23A 'ios-xr':29B 'network':33B 'network-oper':32B 'oper':34B 'peer':95C 'prefix':100C 'proper':80C 'protocol':9A 'remot':48B,87C 'reset':96C 'router':38B 'run':39B 'send':51B 'servic':14A,61B,94C 'traffic':54B 'transit':83C 'type':112C 'unrecogn':82C 'via':97C 'vulner':15A 'wild':106C 'xr':3A,6A,24A,31B,37B,70C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2010-08-30T21:00:12+00:00","kev":{"dateAdded":"2022-03-25","dueDate":"2022-04-15","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-2010-3035","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2010-3035","severity":null,"published_at":"2022-03-25T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T11:39:17+00:00","note":null},{"source":"epss","external_id":"CVE-2010-3035","url":"https://api.first.org/data/v1/epss?cve=CVE-2010-3035","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-2010-3035","url":"https://nvd.nist.gov/vuln/detail/CVE-2010-3035","severity":null,"published_at":"2010-08-30T21:00:12+00:00","modified_at":"2026-06-16T23:22:00+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"}