{"id":"CVE-2026-121669","kind":"vulnerability","aliases":["CVE-2026-121669"],"related":[],"title":"PowerShell Core: weak credential protection lets attackers read secrets over network","description":"Insufficiently protected credentials in Microsoft PowerShell Core allows an unauthorized attacker to disclose information over a network.","summary":"Microsoft PowerShell Core does not sufficiently protect credentials it handles. An unauthorized attacker on the network can disclose that credential information.","severity":"medium","cvss":6.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["powershell","pwsh","runtime","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:30+00:00","first_seen_at":"2026-11-10T19:25:09+00:00","triaged_at":"2026-11-10T19:58:31+00:00","updated_at":"2026-11-10T19:58:31+00:00","category":"runtime","confidence":0.4,"triage":{"at":"2026-11-10T19:58:31Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"PowerShell Core: weak credential protection lets attackers read secrets over network","impact":"medium","summary":"Microsoft PowerShell Core does not sufficiently protect credentials it handles. An unauthorized attacker on the network can disclose that credential information.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["powershell","pwsh","windows"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker reads credentials over the network without authorization","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-121669 for affected PowerShell Core versions, the fixed release, and the exposed credential path.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Teams running PowerShell Core (pwsh) on servers or workstations where credentials are handled. The sources do not give affected versions or the exact configuration that exposes the credentials.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000655,"input_tokens":4500,"output_tokens":410,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121669':14A,17A '-2026':13A,16A 'allow':50C 'attack':7A,34B,53C 'core':2A,24B,49C 'credenti':4A,29B,41B,45C 'cve':12A,15A 'disclos':39B,55C 'handl':31B 'inform':42B,56C 'insuffici':43C 'let':6A 'microsoft':22B,47C 'network':11A,37B,59C 'powershel':1A,18B,23B,48C 'protect':5A,28B,44C 'pwsh':19B 'read':8A 'runtim':20B 'secret':9A 'suffici':27B 'unauthor':33B,52C 'weak':3A 'window':21B","nicknames":[],"mitigations":[],"who_affected":"Teams running PowerShell Core (pwsh) on servers or workstations where credentials are handled. The sources do not give affected versions or the exact configuration that exposes the credentials.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","powershell","pwsh","runtime","windows"],"campaign_type":null,"search_a":"'-121669':14A,17A '-2026':13A,16A 'attack':7A 'core':2A 'credenti':4A 'cve':12A,15A 'let':6A 'network':11A 'powershel':1A 'protect':5A 'read':8A 'secret':9A 'weak':3A","search_b":"'attack':34B 'core':24B 'credenti':29B,41B 'disclos':39B 'handl':31B 'inform':42B 'microsoft':22B 'network':37B 'powershel':18B,23B 'protect':28B 'pwsh':19B 'runtim':20B 'suffici':27B 'unauthor':33B 'window':21B","search_c":"'allow':50C 'attack':53C 'core':49C 'credenti':45C 'disclos':55C 'inform':56C 'insuffici':43C 'microsoft':47C 'network':59C 'powershel':48C 'protect':44C 'unauthor':52C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:30+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121669","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121669","severity":null,"published_at":"2026-11-10T19:20:30+00:00","modified_at":"2026-11-10T19:20:30+00:00","first_seen_at":"2026-11-10T19:25:09+00:00","fetched_at":"2026-11-10T19:25:09+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"}