Junos OS and Junos OS Evolved: Annotate configuration command can be used to change the configuration

Summary

An Improper Neutralization of Delimiters vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to modify the system configuration. A user with limited configuration and commit permissions, using a specifically crafted annotate configuration command, can change any part of the device configuration. This issue affects:  Junos OS:  • all versions before 22.2R3-S7, • 22.4 versions before 22.4R3-S7, • 23.2 versions before 23.2R2-S4, • 23.4 versions before 23.4R2-S4, • 24.2 versions before 24.2R2-S1, • 24.4 versions before 24.4R1-S2, 24.4R2; Junos OS Evolved: • all versions before 22.4R3-S7-EVO, • 23.2-EVO versions before 23.2R2-S4-EVO, • 23.4-EVO versions before 23.4R2-S5-EVO,  • 24.2-EVO versions before 24.2R2-S1-EVO • 24.4-EVO versions before 24.4R2-EVO.

Timeline

1. Jul 11, 2025, 3:10 PM UTCCVE published
2. Jul 11, 2025, 4:04 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Sep 24, 2025, 8:03 AM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 22.2R3-S7; From 22.4 · fixed in 22.4R3-S7; From 23.2 · fixed in 23.2R2-S4; From 23.4 · fixed in 23.4R2-S4; From 24.2 · fixed in 24.2R2-S1

• Juniper Networks Junos OS Evolved

  fixed in 22.4R3-S7-EVO; From 23.2-EVO · fixed in 23.2R2-S4-EVO; From 23.4-EVO · fixed in 23.4R2-S5-EVO; From 24.2-EVO · fixed in 24.2R2-S1-EVO; From 24.4-EVO · fixed in 24.4R2-EVO

References 1