CVE-2019-0943

HIGH

Windows - Elevation of Privilege via ALPC Call Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-0943. PoCs published by Google Security Research.

AI-analyzed exploit summary The exploit demonstrates an Elevation of Privilege (EoP) vulnerability in the Windows Font Cache Service by manipulating section objects to gain write access, leading to an arbitrary memcpy in the service context.

Description

An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC). An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system. The update addresses the vulnerability by correcting how Windows handles calls to ALPC.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/47029

The exploit demonstrates an Elevation of Privilege (EoP) vulnerability in the Windows Font Cache Service by manipulating section objects to gain write access, leading to an arbitrary memcpy in the service context.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Windows 10 1809 (Windows Font Cache Service)
No auth needed
Prerequisites: Access to a vulnerable Windows 10 1809 system · Ability to compile and run C# code
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 7.8
EPSS 0.0237
EPSS Percentile 81.6%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (17)
microsoft/windows_10
microsoft/windows_10 1607
microsoft/windows_10 1703
microsoft/windows_10 1709
microsoft/windows_10 1803
microsoft/windows_10 1809
microsoft/windows_10 1903
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
... and 7 more
Published Jun 12, 2019
Tracked Since Feb 18, 2026