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Not in CISA KEV
HIGH severity

CVE-2026-102012

HIGH

CVE-2026-102012 is a high-severity (CVSS 7.5) Reachable Assertion vulnerability. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published
Updated
Affected
—
Patched
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Exploits
None indexed
Exploitation data as of Oct 14, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

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.

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2026-102012 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

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.
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