CVE-2026-102012: Junos OS Evolved: An attacker causes na-grpcd to crash when gRPC telemetry is enabled

Published Oct 14, 2026

Updated

A Reachable Assertion vulnerability in the na-grpcd process of Juniper Networks Junos OS Evolved allows a remote unauthenticated attacker to cause a denial of service via a gRPC telemetry subscription request.

Affected Software

1 affected component

Juniper Networks Junos OS Evolved

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 23.2R2-S7.7-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 23.4R2-S8.11-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 24.2R2-S5.6-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 24.4R2-S5-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.2R2-S2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.2X100-D35-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4R1-S3-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4R2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4X300-D40-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.2R1-S2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.2R2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.4R1-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in subsequent releases

Event History

Oct 14, 2026

CVE Published

via MITRE·04:44 PM

Data Sourced

via MITRE·04:44 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

Which deployments are exposed to this denial-of-service condition?

Junos OS Evolved deployments with gRPC telemetry enabled are exposed. The issue affects the na-grpcd process.

What does an attacker need to exploit this issue?

An attacker can exploit the issue remotely without authentication by sending a gRPC telemetry subscription request. No user interaction is required.

What is the expected impact of a successful attack?

A successful request can cause the na-grpcd process to crash, resulting in a denial of service. The provided information does not indicate confidentiality or integrity impact.