CVE-2026-101965: Juniper Networks Junos OS Evolved

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

An Use of Externally-Controlled Format String vulnerability in the gRPC daemon of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause telemetry-service disruption, information disclosure, or potential root-level code execution via a crafted message to the gNMI service.

Affected products

• Juniper Networks Junos OS Evolved: from 24.4, before 24.4R2-S5-EVO (fixed in 24.4R2-S5-EVO); from 25.2, before 25.2R2-S2-EVO (fixed in 25.2R2-S2-EVO); from 25.4, before 25.4R1-S3-EVO (fixed in 25.4R1-S3-EVO); from 26.2, before 26.2R1-S2-EVO (fixed in 26.2R1-S2-EVO); version 23.4X100 only; from 25.2X100, before 25.2X100-D35-EVO (fixed in 25.2X100-D35-EVO); …

Published 2026-10-14. Last modified 2026-10-15.