CVE-2026-88157

Summary

A heap-based buffer overflow in OpenSSH for Windows allows remote attackers to execute arbitrary code with high privileges. This vulnerability arises from insufficient bounds checking when processing SSH connections.

Exploitability

Exploitation is moderately difficult requiring a network connection and specific SSH interaction patterns, but can be achieved without authentication through crafted SSH packets that trigger the buffer overflow.

Blast radius

If exploited, this vulnerability could allow attackers to gain full system access on Windows machines running OpenSSH, potentially leading to complete network compromise and lateral movement.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to OpenSSH for Windows version 9.8p1 or later, which contains the fix for this heap-based buffer overflow vulnerability.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.