CVE-2026-20820
Unknown
Unknown - Not Provided
Heap-Based Buffer Overflow in Windows CLFS Driver Enables Privilege Escalation
Publication date: 2026-01-13
Last updated on: 2026-01-13
Assigner: Microsoft Corporation
Description
Description
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_common_log_file_system_driver | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a heap-based buffer overflow in the Windows Common Log File System Driver. It allows an authorized attacker to locally elevate their privileges on the affected system.
How can this vulnerability impact me? :
An attacker who is already authorized on the system can exploit this vulnerability to gain higher privileges, potentially allowing them to execute code with elevated rights, access sensitive data, or make unauthorized changes to the system.
Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70