CVE-2026-70116
Microsoft Windows 11 24h2: stack buffer overflow
- Risk score
- 41/100
- CVSS
- 4.2 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.
- Affected
- Microsoft Windows 11 24h2
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Microsoft Windows 11 24h2: Amber, patch this week. A vulnerability in Windows AI allows an authorized attacker to elevate privileges locally due to an uncontrolled search path element.
The flaws
- CVE-2026-70116: Stack buffer overflow (CVSS 4.2 · EPSS 0%)
- CVE-2026-69923: Uncontrolled search path element in Windows AI allows an authorized attacker to elevate privileges… (CVSS 7.8 · EPSS 1%)
- CVE-2026-108463: Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to… (CVSS 8.8 · EPSS 1%)
- CVE-2026-108130: Heap buffer overflow (CVSS 7.8 · EPSS 0%)
The fix
Fix: Check the linked advisory for a fix, as none is provided.
Who is exposed: {'product': 'Windows 11 24H2', 'vendor': 'Microsoft'}
Where it stands
- No known exploitation
How it unfolded
- 26 Oct, Microsoft Security Response Center (official): CVE-2026-69923 Windows AI Elevation of Privilege Vulnerability
Connects to
- Same weakness: Stack buffer overflow (CWE-121). 223 other warnings in 30 days
- Same product: Earlier Microsoft Windows 11 24h2 warnings. 32 in the last 90 days
Why it is Yellow
- CVSS 4.2 medium
- On your watchlist: windows server
References
Original description
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.
Last activity 13 Oct 2026. Patch Forecast updates every hour.