{"id":"CVE-2015-2426","kind":"vulnerability","aliases":["CVE-2015-2426"],"related":[],"title":"Microsoft Windows: Microsoft Windows Adobe Type Manager Library Remote Code Execution Vulnerability","description":"Buffer underflow in atmfd.dll in the Windows Adobe Type Manager Library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code via a crafted OpenType font, aka \"OpenType Font Driver Vulnerability.\"","summary":"Microsoft Windows' Adobe Type Manager Library mishandles specially crafted OpenType fonts, allowing remote code execution. An attacker who gets a user or system to process a malicious font can run code on the affected machine.","severity":"critical","cvss":9.3,"epss":0.86576,"exploited":true,"exploited_at":"2022-03-28T00:00:00+00:00","products":[{"name":"Microsoft Windows","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","self-hosted","windows"],"not_affected_if":["patched-systems"],"how_to_check":"Check whether the Windows patch for CVE-2015-2426 (MS15-077) is installed, e.g. with systeminfo or Get-HotFix, and look for the KB listed in Microsoft's bulletin. The sources do not give exact KB numbers.","fix":"Apply the Microsoft update for CVE-2015-2426 per vendor instructions, as CISA requires.","status":"open","published_at":"2015-07-20T18:59:01+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:19:50+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.8,"triage":{"at":"2026-10-23T21:19:50Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft update for CVE-2015-2426 per vendor instructions, as CISA requires.","reach":"network","impact":"high","summary":"Microsoft Windows' Adobe Type Manager Library mishandles specially crafted OpenType fonts, allowing remote code execution. An attacker who gets a user or system to process a malicious font can run code on the affected machine.","category":"infrastructure","who_cares":["windows","self-hosted"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs arbitrary code on the Windows machine after a crafted font is opened","analyst_note":"Confirm the exact patch KB and affected Windows builds from Microsoft's MS15-077 bulletin; sources give no version data.","how_to_check":"Check whether the Windows patch for CVE-2015-2426 (MS15-077) is installed, e.g. with systeminfo or Get-HotFix, and look for the KB listed in Microsoft's bulletin. The sources do not give exact KB numbers.","needs_analyst":true,"not_affected_if":["patched-systems"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"critical"},"cost_usd":0.000495,"input_tokens":2845,"output_tokens":420,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2015':14A,17A '-2426':15A,18A '2008':80C '2012':94C '7':86C '8':89C '8.1':91C,103C 'adob':5A,29B,69C 'affect':60B 'aka':116C 'allow':38B,104C 'arbitrari':109C 'atmfd.dll':65C 'attack':43B,106C 'buffer':62C 'code':10A,40B,57B,110C 'craft':35B,113C 'cve':13A,16A 'driver':119C 'execut':11A,41B,108C 'exploit':21B 'font':37B,54B,115C,118C 'get':45B 'gold':95C,101C 'host':25B 'infrastructur':22B 'librari':8A,32B,72C 'machin':61B 'malici':53B 'manag':7A,31B,71C 'microsoft':1A,3A,19A,27B,74C 'mishandl':33B 'opentyp':36B,114C,117C 'process':51B 'r2':83C,97C 'remot':9A,39B,105C 'rt':100C 'run':56B 'self':24B 'self-host':23B 'server':79C,93C 'sp1':84C,87C 'sp2':77C,81C 'special':34B 'system':49B 'type':6A,30B,70C 'underflow':63C 'user':47B 'via':111C 'vista':76C 'vulner':12A,120C 'window':2A,4A,26B,28B,68C,75C,78C,85C,88C,90C,92C,99C 'windows':20A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2015-07-20T18:59:01+00:00","kev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","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":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2015-2426","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2015-2426","severity":null,"published_at":"2022-03-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:07+00:00","note":null},{"source":"epss","external_id":"CVE-2015-2426","url":"https://api.first.org/data/v1/epss?cve=CVE-2015-2426","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-2015-2426","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-2426","severity":null,"published_at":"2015-07-20T18:59:01+00:00","modified_at":"2026-06-17T00:24:05+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+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"}