CVE-2026-83871
HighCVSS 7.0Summary
Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local access could exploit this vulnerability to escalate privileges and take control of the system.
Recommendation
Apply security updates for OpenSSH for Windows.
Other vulnerabilities in OpenSSH for Windows
See all- CVE-2026-88157High
Heap-based buffer overflow in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
- CVE-2026-83769High
A use after free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
- CVE-2026-83754High
Heap-based buffer overflow in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
- CVE-2026-70163High
A vulnerability in OpenSSH for Windows involves allocation of resources without limits or throttling. An unauthenticated attacker can cause a denial of service over the network.
- CVE-2026-97816Critical
OpenSSH for Windows is affected by a use after free vulnerability. This allows an unauthorized attacker to execute code over a network.
- CVE-2026-69397High
A use-after-free vulnerability in OpenSSH for Windows allows an unauthorized attacker to execute code over a network. The issue stems from using freed memory.
Original NVD description (English source)
Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS