CVE-2026-21907

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in theTLS/SSL serverof Juniper Networks Junos Space allows the use of static key ciphers (ssl-static-key-ciphers), reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support Perfect Forward Secrecy (PFS),affecting the long-term confidentiality of encrypted communications.This issue affects all versions of Junos Space before 24.1R5.