Executive brief
Windows Text Shaping is a core Windows component responsible for rendering text in multiple languages and scripts. A heap-based buffer overflow in this component could allow an attacker to execute arbitrary code remotely on affected systems, potentially leading to complete system compromise, data theft, or malware installation.
Technical details
A heap-based buffer overflow vulnerability exists in Windows Text Shaping that can be exploited to execute arbitrary code. The vulnerability is reachable over the network, allowing an unauthenticated attacker to trigger the overflow through specially crafted input. The exact attack vector and preconditions are not detailed in available references, but heap overflows of this nature typically allow memory corruption and code execution. Microsoft has issued a security update to address this issue.
Affected products
- Microsoft Windows Text Shaping
Timeline
- 2026-09-08: disclosed