CVE-2026-21245
EUVD-2026-732210.02.2026, 18:16
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| microsoft | windows_11_24h2 | 𝑥 < 10.0.26100.7781 |
| microsoft | windows_11_24h2 | 𝑥 < 10.0.26100.7781 |
| microsoft | windows_11_25h2 | 𝑥 < 10.0.26200.7781 |
| microsoft | windows_11_25h2 | 𝑥 < 10.0.26200.7781 |
| microsoft | windows_server_2025 | 𝑥 < 10.0.26100.32313 |
𝑥
= Vulnerable software versions
Windows Releases
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA 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().
- CWE-787 - Out-of-bounds WriteThe software writes data past the end, or before the beginning, of the intended buffer.