Security Vulnerability Report
中文
CVE-2026-34343 CVSS 7.8 HIGH

CVE-2026-34343

Published: 2026-05-12 18:17:09
Last Modified: 2026-05-14 14:58:24

Description

Heap-based buffer overflow in Windows Application Identity (AppID) Subsystem allows an authorized attacker to elevate privileges locally.

CVSS Details

CVSS Score
7.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* - VULNERABLE
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* - VULNERABLE
Microsoft Windows (具体受影响版本请参考官方安全公告)

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
#include <windows.h> #include <stdio.h> // Proof of Concept for CVE-2026-34343 // This code attempts to trigger the heap overflow in AppID subsystem. // Note: This is for educational and testing purposes only. void trigger_overflow() { // Payload preparation char buffer[0x1000]; memset(buffer, 'A', sizeof(buffer)); // Fill with 'A's to cause overflow printf("[*] Attempting to trigger vulnerability in AppID Subsystem...\n"); // In a real scenario, the attacker would call the specific vulnerable API // or send a specific IOCTL to the AppID driver with this buffer. // Example: VulnerableFunction(buffer, sizeof(buffer)); printf("[*] Malicious payload prepared. Size: %d bytes\n", sizeof(buffer)); printf("[!] Exploit logic would execute here to overwrite heap structures.\n"); } int main() { printf("CVE-2026-34343 PoC Generator\n"); trigger_overflow(); return 0; }

References

Raw JSON Data

JSON
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