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Medium severity5.9NVD Advisory· Published Jan 15, 2026· Updated Jun 17, 2026

CVE-2026-21907

CVE-2026-21907

Description

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of 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.

Affected products

7
  • Juniper Networks/Junos Space7 versions
    cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*+ 6 more
    • cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*range: <24.1
    • cpe:2.3:a:juniper:junos_space:24.1:r1:*:*:*:*:*:*
    • cpe:2.3:a:juniper:junos_space:24.1:r2:*:*:*:*:*:*
    • cpe:2.3:a:juniper:junos_space:24.1:r3:*:*:*:*:*:*
    • cpe:2.3:a:juniper:junos_space:24.1:r4:*:*:*:*:*:*
    • (no CPE)range: <24.1R5
    • (no CPE)range: 0

Patches

Vulnerability mechanics

References

2

News mentions

0

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