cve 2026 25188

CVE-2026-25188 is a high-severity heap-based buffer-overflow vulnerability in the Windows Telephony Service (TapiSrv) that Microsoft addressed in the March 10, 2026 Patch Tuesday update. The flaw could allow an attacker on an adjacent network to elevate privileges on a vulnerable system. Discussions on WindowsForum.com cover the technical details of the vulnerability, the associated Microsoft Security Response Center advisory, and the importance of applying the security update promptly. Users share experiences with the patch and offer guidance on verifying system protection against this privilege escalation threat.