Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-21907 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://kb.juniper.net/JSA106006 [email protected]Vendor Advisory
https://supportportal.juniper.net/JSA106006 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-327Use of a Broken or Risky Cryptographic Algorithm[email protected]

Affected Products

ProductVersions
juniper junos space
< 24.1
24.1 r1
24.1 r2
24.1 r3
24.1 r4

CPE

  • cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*
  • 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:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-21907
NVD Published Date:
Jan 15, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-21907 Details - Not Deferred