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Juniper Junos OS Multiple Vulnerabilities

Release Date: 29 Oct 2021 4132 Views

RISK: Medium Risk

TYPE: Operating Systems - Networks OS

TYPE: Networks OS

Multiple vulnerabilities were identified in Juniper Junos OS, a remote attacker could exploit some of these vulnerabilities to trigger denial of service condition, elevation of privilege and remote code execution on the targeted system.


  • Denial of Service
  • Elevation of Privilege
  • Remote Code Execution

System / Technologies affected

All versions of Junos OS, including the following supported releases:

  • Junos OS 15.1 versions prior to 15.1R7-S10
  • Junos OS 17.4 versions prior to 17.4R3-S5
  • Junos OS 18.3 versions prior to 18.3R3-S5
  • Junos OS 18.4 versions prior to 18.4R3-S9
  • Junos OS 19.1 versions prior to 19.1R3-S6
  • Junos OS 19.2 versions prior to 19.2R1-S7, 19.2R3-S3
  • Junos OS 19.3 versions prior to 19.3R2-S6, 19.3R3-S3
  • Junos OS 19.4 versions prior to 19.4R3-S6
  • Junos OS 20.1 versions prior to 20.1R2-S2, 20.1R3-S1
  • Junos OS 20.2 versions prior to 20.2R3-S2
  • Junos OS 20.3 versions prior to 20.3R3
  • Junos OS 20.4 versions prior to 20.4R2-S1, 20.4R3
  • Junos OS 21.1 versions prior to 21.1R1-S1, 21.1R2


Junos OS Evolved:

  • Junos OS Evolved all versions prior to 20.4R2-S3-EVO
  • Junos OS Evolved all versions of 21.1-EVO


Before installation of the software, please visit the vendor web-site for more details.


Apply fixes issued by the vendor

  • Junos OS 15.1R7-S10
  • Junos OS 17.4R3-S5
  • Junos OS 18.3R3-S5
  • Junos OS 18.4R3-S9
  • Junos OS 19.1R3-S6
  • Junos OS 19.2R1-S7
  • Junos OS 19.2R3-S3
  • Junos OS 19.3R2-S6
  • Junos OS 19.3R3-S3
  • Junos OS 19.4R3-S6
  • Junos OS 20.1R2-S2
  • Junos OS 20.1R3-S1
  • Junos OS 20.2R3-S2
  • Junos OS 20.3R3
  • Junos OS 20.4R2-S1
  • Junos OS 20.4R3
  • Junos OS 21.1R1-S1
  • Junos OS 21.1R2
  • Junos OS 21.1R3
  • Junos OS 21.2R1

and all subsequent releases


  • Junos OS Evolved 20.4R2-S3-EVO
  • Junos OS Evolved 21.2R1-EVO

and all subsequent releases


Vulnerability Identifier


Related Link