Windows 10 1607
CVE-2026-25188
HIGH
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.
AnalysisAI
Privilege escalation in Windows Telephony Service through heap buffer overflow affects Windows 10 1607, Windows 11 25h2, and Windows Server 2012, allowing adjacent network attackers to gain elevated system access without authentication. The vulnerability has a high CVSS score of 8.8 but currently lacks a patch, creating significant risk for exposed systems. Exploitation requires network proximity but no user interaction.
Technical ContextAI
Classified as CWE-122 (Heap-based Buffer Overflow). Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.
RemediationAI
Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.
More in Windows 10 1607
View allWindows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables
Windows SMB contains an improper access control vulnerability (CVE-2025-33073, CVSS 8.8) enabling authenticated attacker
Active Directory Domain Services contains an elevation of privilege vulnerability that allows authenticated domain users
Microsoft Scripting Engine contains a type confusion vulnerability allowing unauthorized remote code execution over the
Windows CLFS Driver contains an input validation flaw enabling local privilege escalation, yet another CLFS kernel vulne
Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow enabling local privilege escalation
Windows Shell contains a protection mechanism failure (CVE-2026-21510, CVSS 8.8) that allows unauthenticated remote atta
In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptograph
Desktop Window Manager (DWM) in Windows contains a type confusion vulnerability (CVE-2026-21519, CVSS 7.8) that enables
Windows Common Log File System Driver contains another use-after-free for local privilege escalation, the latest in a se
Windows Storage contains an elevation of privilege vulnerability through symlink following that allows authorized attack
Windows Ancillary Function Driver for WinSock contains a use-after-free enabling local privilege escalation through a nu
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today