CVE-2026-101983: Junos OS 23.4 to before 23.4R2-S8.13, 24.2 to before 24.2R2-S5.5, 24.4 to before 24.4R2-S5, 25.2 to before 25.2R2-S2…

Affected technology

Junos OS · 23.4 to before 23.4R2-S8.13, 24.2 to before 24.2R2-S5.5, 24.4 to before 24.4R2-S5, 25.2 to before 25.2R2-S2, 25.4 to before 25.4R1-S3, 26.2 to before 26.2R1-S2
Juniper Networks

Junos OS Evolved · 23.4 to before 23.4R2-S8.11-EVO, 24.2 to before 24.2R2-S5.6-EVO, 24.4 to before 24.4R2-S5-EVO, 25.2 to before 25.2R2-S2-EVO, 25.4 to before 25.4R1-S3-EVO, 26.2 to before 26.2R1-S2-EVO, 23.4X100, 25.2X100 to before 25.2X100-D35-EVO, 25.4X300 to before 25.4X300-D40-EVO
Juniper Networks

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated network attacker can cause remote code execution and denial of service via a J-Web virtual-domain configured. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality, integrity and availability impact as high.