CVE-2026-105016

CRITICAL CVSS 3.1: 9.8 EPSS 1.66%
Updated Oct 25, 2026
Microsoft
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions 10.0.0 — 9.0.21
Fixed In 10.0.20348.5761
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Microsoft
Public PoC No

Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 15

Configuration From (including) Up to (excluding)
Microsoft Windows_Server_2022
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
10.0.20348.0 10.0.20348.5761
Microsoft Windows_11_23h2
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
10.0.22631.0 10.0.22631.7652
Microsoft Windows_11_23h2
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*
10.0.22631.0 10.0.22631.7652
Microsoft Windows_11_24h2
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
10.0.26100.0 10.0.26100.9711
Microsoft Windows_11_25h2
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
10.0.26200.0 10.0.26200.9711
Microsoft Windows_11_Version_26h2_For_Arm64-Based_Systems
cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*
10.0.26300.0 10.0.26300.9711
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
10.0.26100.0 10.0.26100.33650
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
10.0.26100.0 10.0.26100.33650
Microsoft Windows_11_26h1
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*
10.0.28000.0 10.0.28000.3231
Microsoft Microsoft_Visual_Studio_2026_Version_18.10
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
18.10.0 18.10.4
Microsoft Visual_Studio_2022
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
17.14.0 17.14.42
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
8.0.0 8.0.32
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
9.0.0 9.0.21
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
10.0.0 10.0.14
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
11.0.0 11.0.0-rc.2.26504.105