{"id":"CVE-2019-1121","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-1121","generatedAt":"2026-10-28T21:27:32.537Z","title":"A remote code execution vulnerability exists in the way that DirectWrite handles objects in memory, aka 'DirectWrite Remote Code Execution Vulnerability'.","description":"A remote code execution vulnerability exists in the way that DirectWrite handles objects in memory, aka 'DirectWrite Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1117, CVE-2019-1118, CVE-2019-1119, CVE-2019-1120, CVE-2019-1122, CVE-2019-1123, CVE-2019-1124, CVE-2019-1127, CVE-2019-1128.","published":"2019-07-15T19:15:20.000Z","lastModified":"2026-06-17T02:27:52.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["microsoft/windows 10","microsoft/windows server 2016","microsoft/windows server 2019"],"epss":{"score":0.16936,"percentile":0.97044,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.15449,"percentile":0.96694},{"date":"2026-09-22","score":0.16936,"percentile":0.96921}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2019-07-10","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47097,"kind":"exploit","title":"Microsoft DirectWrite / AFDKO - Heap-Based Out-of-Bounds Read/Write in OpenType Font Handling Due to Unbounded iFD","url":"https://www.exploit-db.com/exploits/47097","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/47097.txt","file":"exploits/windows/dos/47097.txt","published":"2019-07-10","added":"2019-07-10","updated":"2019-07-10","author":"Google Security Research","type":"dos","platform":"windows","port":null,"verified":true,"codes":["CVE-2019-1121"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1840"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 16.9%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1121","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1121","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1121","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}