Riskcovery

CVE-2026-102031

Junos OS Evolved: A low-privileged TACACS+ user causes root command execution when authorization refresh is enabled

State
Published
Severity
9.3 Critical
Published
Oct 14, 2026
Updated
Oct 16, 2026
Reserved
Sep 28, 2026

Read the record on cve.org

Description

An OS Command Injection vulnerability in TACACS of Juniper Networks Junos OS Evolved allows a low-privileged TACACS+-authenticated user to execute commands with root privileges when periodic TACACS+ authorization-refresh is enabled.

Scores

CVSSScoreVectorSource
4.09.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:Mjuniper
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hjuniper

Weaknesses

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

ProductVersions
Junos OS EvolvedJuniper Networks
  • before 23.2R2-S7.7-EVOAffected
  • 23.4 to before 23.4R2-S8.11-EVOAffected
  • 24.2 to before 24.2R2-S5.6-EVOAffected
  • 24.4 to before 24.4R2-S5-EVOAffected
  • 25.2 to before 25.2R2-S2-EVOAffected
  • 25.4 to before 25.4R1-S3-EVOAffected
  • 26.2 to before 26.2R1-S2-EVOAffected
  • 23.4X100Affected
  • 25.2X100 to before 25.2X100-D35-EVOAffected
  • 25.4X300 to before 25.4X300-D40-EVOAffected

References

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