HomeJuniperCVE-2026-21907

CVE-2026-21907

HIGH
8.2CVSS
Published: 2026-01-15
Updated: 2026-01-15
AI Analysis

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.

CVSS Metrics

Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:Green
Attack Vector
network
Complexity
low
Privileges
none
User Action
none
Confidentiality
undefined
Integrity
undefined
Availability
undefined
Weaknesses
CWE-327

Metadata

Primary Vendor
JUNIPER
Published
1/15/2026
Last Modified
1/15/2026
Source
NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

Juniper : Refer to Description

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CVE-CVE-2026-21907 | HIGH Severity | CVEDatabase.com | CVEDatabase.com