Executive brief
A heap buffer overflow vulnerability in the Windows Speech component allows a locally authenticated attacker to escalate privileges on affected systems. Exploitation requires the attacker to already have local access to the computer, but successful exploitation could lead to complete system compromise with elevated administrative privileges.
Technical details
A heap-based buffer overflow exists in Microsoft Windows Speech that can be triggered by a locally authenticated user. The vulnerability allows an attacker with existing local access to execute arbitrary code with elevated privileges (SYSTEM or Administrator level). No public exploit code has been reported in the wild at this time.
Affected products
- Microsoft Windows <UNKNOWN>
Timeline
- 2026-09-08: disclosed: CVE-2026-69444 published