{"id":"CVE-2026-108401","kind":"vulnerability","aliases":["CVE-2026-108401"],"related":[],"title":"Windows Remote Desktop Services: heap overflow lets an authorized user run code","description":"Heap-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.","summary":"A heap-based buffer overflow in Windows Remote Desktop Services lets an attacker who already has access run code over the network. The sources give a CVSS score of 8.8 and do not describe a fix or exploitation in the wild.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","rds","remote-desktop","windows"],"not_affected_if":["rds-disabled"],"how_to_check":"- Check the installed Windows build and whether the Remote Desktop Services role is enabled on the host.","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":"2026-11-10T19:34:03+00:00","updated_at":"2026-11-10T19:34:03+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:34:03Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows Remote Desktop Services: heap overflow lets an authorized user run code","impact":"high","summary":"A heap-based buffer overflow in Windows Remote Desktop Services lets an attacker who already has access run code over the network. The sources give a CVSS score of 8.8 and do not describe a fix or exploitation in the wild.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","remote-desktop","rds"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"attacker runs code on the server over the network","analyst_note":"Find the affected Windows builds and Microsoft's patch for CVE-2026-108401 in the MSRC advisory; the NVD entry gives only the description and score.","how_to_check":"- Check the installed Windows build and whether the Remote Desktop Services role is enabled on the host.\n- unknown for the exact affected builds: the sources do not list them.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["rds-disabled"],"who_is_affected":"Systems running Windows Remote Desktop Services, where remote desktop access is enabled. The sources do not list affected Windows builds or whether a default configuration is exposed. Hosts without Remote Desktop Services enabled are likely not affected.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000705,"input_tokens":4496,"output_tokens":511,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the affected Windows builds and Microsoft's patch for CVE-2026-108401 in the MSRC advisory; the NVD entry gives only the description and score.","search":"'-108401':15A,18A '-2026':14A,17A '8.8':55B 'access':42B 'allow':77C 'alreadi':40B 'attack':38B,80C 'author':9A,79C 'base':28B,69C 'buffer':29B,70C 'code':12A,44B,83C 'cve':13A,16A 'cvss':52B 'describ':59B 'desktop':3A,23B,34B,75C 'execut':82C 'exploit':63B 'fix':61B 'give':50B 'heap':5A,27B,68C 'heap-bas':26B,67C 'infrastructur':19B 'let':7A,36B 'network':47B,86C 'overflow':6A,30B,71C 'rds':20B 'remot':2A,22B,33B,74C 'remote-desktop':21B 'run':11A,43B 'score':53B 'servic':4A,35B,76C 'sourc':49B 'user':10A 'wild':66B 'window':1A,24B,32B,73C","nicknames":[],"mitigations":[],"who_affected":"Systems running Windows Remote Desktop Services, where remote desktop access is enabled. The sources do not list affected Windows builds or whether a default configuration is exposed. Hosts without Remote Desktop Services enabled are likely not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","rds","remotedesktop","windows"],"campaign_type":null,"search_a":"'-108401':15A,18A '-2026':14A,17A 'author':9A 'code':12A 'cve':13A,16A 'desktop':3A 'heap':5A 'let':7A 'overflow':6A 'remot':2A 'run':11A 'servic':4A 'user':10A 'window':1A","search_b":"'8.8':55B 'access':42B 'alreadi':40B 'attack':38B 'base':28B 'buffer':29B 'code':44B 'cvss':52B 'describ':59B 'desktop':23B,34B 'exploit':63B 'fix':61B 'give':50B 'heap':27B 'heap-bas':26B 'infrastructur':19B 'let':36B 'network':47B 'overflow':30B 'rds':20B 'remot':22B,33B 'remote-desktop':21B 'run':43B 'score':53B 'servic':35B 'sourc':49B 'wild':66B 'window':24B,32B","search_c":"'allow':77C 'attack':80C 'author':79C 'base':69C 'buffer':70C 'code':83C 'desktop':75C 'execut':82C 'heap':68C 'heap-bas':67C 'network':86C 'overflow':71C 'remot':74C 'servic':76C 'window':73C","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:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-108401","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108401","severity":null,"published_at":"2026-11-10T19:18:02+00:00","modified_at":"2026-11-10T19:18:03+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"}