CVE-2019-1118

HIGH

Windows 10 and Windows Server 2016/2019 - Remote Code Execution in DirectWrite

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-1118. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit targets a memory corruption vulnerability in AFDKO's CFF font parsing code, specifically in the `do_blend_cube` and `do_set_weight_vector_cube` functions, which can lead to out-of-bounds memory access and potential remote code execution when processing malformed OpenType variable fonts.

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-2019-1119, CVE-2019-1120, CVE-2019-1121, CVE-2019-1122, CVE-2019-1123, CVE-2019-1124, CVE-2019-1127, CVE-2019-1128.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Google Security Research · textdoswindows

https://www.exploit-db.com/exploits/47087

View Code ZIP pw:eip

This exploit targets a memory corruption vulnerability in AFDKO's CFF font parsing code, specifically in the `do_blend_cube` and `do_set_weight_vector_cube` functions, which can lead to out-of-bounds memory access and potential remote code execution when processing malformed OpenType variable fonts.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: AFDKO (Adobe Font Development Kit for OpenType) and Microsoft DirectWrite (Windows 10 1709+)

No auth needed

Prerequisites: A victim must open a specially crafted website with an embedded malicious OpenType variable font and attempt to print it.

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1203 - Exploitation for Client Execution

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1

Core References

Patch, Vendor Advisory x_refsource_misc

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1118

Scores

CVSS v3 8.8

EPSS 0.2367

EPSS Percentile 97.5%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published

Products (7)

microsoft/windows_10 1709

microsoft/windows_10 1803

microsoft/windows_10 1809

microsoft/windows_10 1903

microsoft/windows_server_2016 1803

microsoft/windows_server_2016 1903

microsoft/windows_server_2019

Published Jul 15, 2019

Tracked Since Feb 18, 2026