EIP-2026-115781

PRE-CVE

Microsoft Windows - Font Subsetting DLL Heap-Based Out-of-Bounds Read in MergeFonts

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-115781. PoCs published by Google Security Research.

AI-analyzed exploit summary The exploit demonstrates an out-of-bounds memory access vulnerability in Microsoft's fontsub.dll, specifically in the MergeFonts function, leading to a crash and potential information disclosure. The PoC includes malformed font files that trigger the issue.

Description

Microsoft Windows - Font Subsetting DLL Heap-Based Out-of-Bounds Read in MergeFonts

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/47084

The exploit demonstrates an out-of-bounds memory access vulnerability in Microsoft's fontsub.dll, specifically in the MergeFonts function, leading to a crash and potential information disclosure. The PoC includes malformed font files that trigger the issue.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 10 1709 (fontsub.dll)
No auth needed
Prerequisites: Access to the target system to load a malformed font file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026