{"id":"CVE-2016-7256","kind":"vulnerability","aliases":["CVE-2016-7256"],"related":[],"title":"atmfd.dll in the Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7…","description":"atmfd.dll in the Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allows remote attackers to execute arbitrary code via a crafted web site, aka \"Open Type Font Remote Code Execution Vulnerability.\"","summary":"Windows font library mishandles specially crafted embedded OpenType fonts, allowing remote code execution. An attacker who succeeds can take control of the affected system.","severity":"critical","cvss":9.3,"epss":0.64591,"exploited":true,"exploited_at":"2022-05-25T00:00:00+00:00","products":[{"name":"Microsoft Windows","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 10 1507","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 10 1511","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 10 1607","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 7","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 8.1","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows rt 8.1","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2008","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2008","fixed":[],"affected":"= r2","ecosystem":"vendor"},{"name":"microsoft windows server 2012","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2012","fixed":[],"affected":"= r2","ecosystem":"vendor"},{"name":"microsoft windows server 2016","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows vista","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","windows"],"not_affected_if":["patched-systems"],"how_to_check":null,"fix":"Apply the Microsoft security update for CVE-2016-7256 per vendor instructions (CISA KEV required action).","status":"open","published_at":"2016-11-10T07:00:10+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:15:41+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:15:41Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft security update for CVE-2016-7256 per vendor instructions (CISA KEV required action).","reach":"network","impact":"high","summary":"Windows font library mishandles specially crafted embedded OpenType fonts, allowing remote code execution. An attacker who succeeds can take control of the affected system.","category":"infrastructure","who_cares":["windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs code on the Windows machine after a crafted font is opened","analyst_note":"Confirm the affected Windows builds and the MS16-120 bulletin ID and KB numbers at the Microsoft Security Response Center entry for CVE-2016-7256.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["patched-systems"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000445,"input_tokens":2847,"output_tokens":321,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2016':22A,25A '-7256':23A,26A '10':31A,35A,39A,134C '1507':32A '1511':36A,136C '1607':40A,138C '2008':14A,54A,58A,114C '2012':62A,66A,126C '2016':70A,142C '7':20A,43A,120C '8.1':46A,50A,123C,132C 'affect':99B 'aka':155C 'allow':86B,143C 'arbitrari':148C 'atmfd.dll':1A,101C 'attack':91B,145C 'code':88B,149C,160C 'control':96B 'craft':82B,152C 'cve':21A,24A 'embed':83B 'execut':89B,147C,161C 'exploit':74B 'font':5A,78B,85B,105C,158C 'gold':127C,135C 'infrastructur':75B 'librari':6A,79B,106C 'microsoft':8A,27A,29A,33A,37A,41A,44A,47A,51A,55A,59A,63A,67A,71A,108C 'mishandl':80B 'open':156C 'opentyp':84B 'r2':17A,117C,129C 'remot':87B,144C,159C 'rt':49A,131C 'server':13A,53A,57A,61A,65A,69A,113C,125C,141C 'site':154C 'sp1':18A,118C,121C 'sp2':11A,15A,111C,115C 'special':81B 'succeed':93B 'system':100B 'take':95B 'type':157C 'via':150C 'vista':10A,73A,110C 'vulner':162C 'web':153C 'window':4A,9A,12A,19A,76B,77B,104C,109C,112C,119C,122C,124C,130C,133C,140C 'windows':28A,30A,34A,38A,42A,45A,48A,52A,56A,60A,64A,68A,72A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2016-11-10T07:00:10+00:00","kev":{"dateAdded":"2022-05-25","dueDate":"2022-06-15","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2016-7256","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2016-7256","severity":null,"published_at":"2022-05-25T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T13:39:31+00:00","note":null},{"source":"epss","external_id":"CVE-2016-7256","url":"https://api.first.org/data/v1/epss?cve=CVE-2016-7256","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:45+00:00","fetched_at":"2026-10-23T19:13:45+00:00","note":null},{"source":"nvd","external_id":"CVE-2016-7256","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-7256","severity":null,"published_at":"2016-11-10T07:00:10+00:00","modified_at":"2026-06-17T00:52:52+00:00","first_seen_at":"2026-10-23T22:29:04+00:00","fetched_at":"2026-10-23T22:29:04+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"}