Juniper Junos OS Evolved is widely deployed in enterprise and service-provider networks; authenticated exploit can cause telemetry outages, data leak, or root RCE—high operational impact.
CVE-2026-101965
Format-string vuln in Juniper gNMI/gRPC enabling telemetry disruption, info leak, or possible RCE.
Is CVE-2026-101965 being exploited?
Not confirmed. CVE-2026-101965 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.60% probability of exploitation in the next 30 days.
How severe is CVE-2026-101965?
CVE-2026-101965 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-101965?
Not known from our data. No patch reference has been recorded for CVE-2026-101965, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-101965 affect?
CVE-2026-101965 affects Juniper Junos OS Evolved (gRPC daemon / gNMI service) — affected Junos Evolved devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-101965?
Apply vendor advisory fixes/workarounds ASAP and restrict gNMI access to trusted management networks.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated network attacker can send crafted gNMI/gRPC messages to disrupt telemetry, disclose data, or achieve root-level remote code execution.
Immediate action required
- affected>= 24.4 and < 24.4R2-S5-EVO
- affected>= 25.2 and < 25.2R2-S2-EVO
- affected>= 25.4 and < 25.4R1-S3-EVO
- affected>= 26.2 and < 26.2R1-S2-EVO
- affected23.4X100
- affected>= 25.2X100 and < 25.2X100-D35-EVO
- affected>= 25.4X300 and < 25.4X300-D40-EVO
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.