{"id":"CVE-2026-105590","kind":"vulnerability","aliases":["CVE-2026-105590"],"related":[],"title":"Improper certificate validation in Windows Active Directory Certificate Services allows an authorized attacker to…","description":"Improper certificate validation in Windows Active Directory Certificate Services allows an authorized attacker to bypass a security feature over a network.","summary":null,"severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":[],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:02+00:00","first_seen_at":"2026-11-10T19:24:21+00:00","triaged_at":null,"updated_at":"2026-11-10T19:39:26+00:00","category":null,"confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'-105590':16A,19A '-2026':15A,18A 'activ':6A,25C 'allow':10A,29C 'attack':13A,32C 'author':12A,31C 'bypass':34C 'certif':2A,8A,21C,27C 'cve':14A,17A 'directori':7A,26C 'featur':37C 'improp':1A,20C 'network':40C 'secur':36C 'servic':9A,28C 'valid':3A,22C 'window':5A,24C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium"],"campaign_type":null,"search_a":"'-105590':16A,19A '-2026':15A,18A 'activ':6A 'allow':10A 'attack':13A 'author':12A 'certif':2A,8A 'cve':14A,17A 'directori':7A 'improp':1A 'servic':9A 'valid':3A 'window':5A","search_b":"","search_c":"'activ':25C 'allow':29C 'attack':32C 'author':31C 'bypass':34C 'certif':21C,27C 'directori':26C 'featur':37C 'improp':20C 'network':40C 'secur':36C 'servic':28C 'valid':22C 'window':24C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:02+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-105590","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105590","severity":null,"published_at":"2026-11-10T19:18:02+00:00","modified_at":"2026-11-10T19:18:02+00:00","first_seen_at":"2026-11-10T19:24:21+00:00","fetched_at":"2026-11-10T19:24:21+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}