Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Heap-based buffer overflow in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
Happy to share that I found 3 EoP vulnerabilities in the Windows Secure Kernel: CVE-2026-83939 CVE-2026-69846 CVE-2026-69906 Thanks to @msftsecresponse for coordinating the disclosure. I’ll share more details in a blog post soon!
Post summary
The author announces the discovery of three Windows Secure Kernel privilege escalation CVEs and indicates they will release more details in a forthcoming blog post.
@msftsecresponse https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83939 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69846 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69906
Post summary
Microsoft Security Response Center links to update‑guide pages for CVE‑2026‑83939, CVE‑2026‑69846, and CVE‑2026‑69906, implying that patches and advisory details are available.
22 of 22 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | microsoft | windows_10_1607 | - | - | x64 |
| OS | microsoft | windows_10_1607 | - | - | x86 |
| OS | microsoft | windows_10_1809 | - | - | x64 |
| OS | microsoft | windows_10_1809 | - | - | x86 |
| OS | microsoft | windows_10_21h2 | - | - | arm64 |
| OS | microsoft | windows_10_21h2 | - | - | x64 |
| OS | microsoft | windows_10_21h2 | - | - | x86 |
| OS | microsoft | windows_10_22h2 | - | - | arm64 |
| OS | microsoft | windows_10_22h2 | - | - | x64 |
| OS | microsoft | windows_10_22h2 | - | - | x86 |
| OS | microsoft | windows_11_23h2 | - | - | arm64 |
| OS | microsoft | windows_11_23h2 | - | - | x64 |
| OS | microsoft | windows_11_24h2 | - | - | arm64 |
| OS | microsoft | windows_11_24h2 | - | - | x64 |
| OS | microsoft | windows_11_25h2 | - | - | arm64 |
| OS | microsoft | windows_11_25h2 | - | - | x64 |
| OS | microsoft | windows_11_26h1 | - | - | arm64 |
| OS | microsoft | windows_11_26h1 | - | - | x64 |
| OS | microsoft | windows_server_2016 | - | - | - |
| OS | microsoft | windows_server_2019 | - | - | - |
| OS | microsoft | windows_server_2022 | - | - | - |
| OS | microsoft | windows_server_2025 | - | - | - |