EIP-2026-115637

PRE-CVE

Microsoft DirectWrite / AFDKO - Use of Uninitialized Memory While Freeing Resources in var_loadavar

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-115637. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit targets a memory corruption vulnerability in AFDKO's handling of the 'avar' table in OpenType variable fonts. The PoC triggers a crash by manipulating axisCount and positionMapCount values, leading to uninitialized memory access during cleanup.

Description

Microsoft DirectWrite / AFDKO - Use of Uninitialized Memory While Freeing Resources in var_loadavar

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/47090

This exploit targets a memory corruption vulnerability in AFDKO's handling of the 'avar' table in OpenType variable fonts. The PoC triggers a crash by manipulating axisCount and positionMapCount values, leading to uninitialized memory access during cleanup.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: AFDKO (Adobe Font Development Kit for OpenType)
No auth needed
Prerequisites: A specially crafted OpenType variable font file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026