{"id":"CVE-2024-20439","kind":"vulnerability","aliases":["CVE-2024-20439"],"related":[],"title":"cisco smart license utility: A vulnerability in Cisco Smart Licensing Utility (CSLU) could allow an unauthenticated, remote attacker to log into…","description":"A vulnerability in Cisco Smart Licensing Utility (CSLU) could allow an unauthenticated, remote attacker to log into an affected system by using a static administrative credential.\r\n\r This vulnerability is due to an undocumented static user credential for an administrative account. An attacker could exploit this vulnerability by using the static credentials to login to the affected system. A successful exploit could allow the attacker to login to the affected system with administrative rights over the CSLU application API.","summary":"Cisco Smart Licensing Utility ships with a hardcoded static credential that lets a remote attacker log in without an account. The login grants administrative access to the affected system.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2025-03-31T00:00:00+00:00","products":[{"name":"Cisco Smart Licensing Utility","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"cisco smart license utility","fixed":["2.3.0"],"affected":">= 2.0.0, < 2.3.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["cisco","exploited","network-admin","smart-licensing-utility","vendor"],"not_affected_if":["product-not-installed"],"how_to_check":"Check whether Cisco Smart Licensing Utility is installed on your hosts and whether its admin interface is reachable from untrusted networks.","fix":"Apply the mitigations in Cisco's vendor advisory, or discontinue use of the product if no mitigation is available (per CISA KEV required action). Fixed version: unknown","status":"open","published_at":"2024-09-04T17:15:13+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:48:53+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"vendor","confidence":0.7,"triage":{"at":"2026-10-23T20:48:53Z","model":"claude-haiku-5-5","output":{"fix":"Apply the mitigations in Cisco's vendor advisory, or discontinue use of the product if no mitigation is available (per CISA KEV required action). Fixed version: unknown","reach":"internet","summary":"Cisco Smart Licensing Utility ships with a hardcoded static credential that lets a remote attacker log in without an account. The login grants administrative access to the affected system.","category":"vendor","who_cares":["cisco","smart-licensing-utility","network-admin"],"confidence":0.7,"needs_auth":"no","worst_case":"Remote attacker logs in with hardcoded admin credentials and takes full control of the system.","analyst_note":"Find the Cisco advisory for CVE-2024-20439 to get affected and fixed versions and the exact mitigation steps; sources here give none.","how_to_check":"Check whether Cisco Smart Licensing Utility is installed on your hosts and whether its admin interface is reachable from untrusted networks.\nunknown","needs_analyst":true,"not_affected_if":["product-not-installed"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000455,"input_tokens":2551,"output_tokens":399,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2024':22A,25A '-20439':23A,26A 'access':69B 'account':64B,113C 'admin':39B 'administr':68B,98C,112C,145C 'affect':72B,92C,129C,142C 'allow':14A,83C,135C 'api':151C 'applic':150C 'attack':18A,59B,87C,115C,137C 'cisco':1A,8A,27A,31A,35B,45B,77C 'could':13A,82C,116C,134C 'credenti':54B,99C,109C,124C 'cslu':12A,81C,149C 'cve':21A,24A 'due':103C 'exploit':36B,117C,133C 'grant':67B 'hardcod':52B 'let':56B 'licens':3A,10A,42B,47B,79C 'license':33A 'licensing':29A 'log':20A,60B,89C 'login':66B,126C,139C 'network':38B 'network-admin':37B 'remot':17A,58B,86C 'right':146C 'ship':49B 'smart':2A,9A,28A,32A,41B,46B,78C 'smart-licensing-util':40B 'static':53B,97C,107C,123C 'success':132C 'system':73B,93C,130C,143C 'unauthent':16A,85C 'undocu':106C 'use':95C,121C 'user':108C 'util':4A,11A,43B,48B,80C 'utility':30A,34A 'vendor':44B 'vulner':6A,75C,101C,119C 'without':62B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-09-04T17:15:13+00:00","kev":{"dateAdded":"2025-03-31","dueDate":"2025-04-21","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","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":"psirt@cisco.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2024-20439","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-20439","severity":null,"published_at":"2025-03-31T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T11:39:14+00:00","note":null},{"source":"nvd","external_id":"CVE-2024-20439","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-20439","severity":null,"published_at":"2024-09-04T17:15:13+00:00","modified_at":"2026-06-17T07:07:06+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+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"}