By weakness (CWE)

CWE-923: related vulnerabilities

CVEs classified under CWE-923. Understanding the weakness class helps prioritize systemic fixes over one-off patches.

1 published vulnerability

• CVE-2026-55655MEDIUM 5.0

  OpenSSH on Linux systems contains a vulnerability that allows a local attacker without elevated privileges to intercept and manipulate X11 graphical forwarding traffic. The attack works by hijacking the socket connection used for X11 forwarding before a legitimate session is established. If successful, an attacker could see sensitive window contents, capture keyboard input, or interfere with the forwarded session. The vulnerability requires the attacker to be on the same Linux client machine, have local user access, and requires specific user interaction—making it a targeted threat rather than a widespread one.