High (7.8) in microsoft. EPSS 3.5% chance of exploitation in the next 30 days.
A remote code execution vulnerability exists when the Microsoft Speech API (SAPI) improperly handles text-to-speech (TTS) input. The vulnerability could corrupt memory in a way that enables an attacker to execute arbitrary code in the context of the current user.
To exploit the vulnerability, an attacker would need to convince a user to open a specially crafted document containing TTS content invoked through a scripting language.
The update address the vulnerability by modifying how the system handles objects in memory.
Severity
CVSS 3.1
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
3.5% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)