Remote root RCE in Juniper Session Smart Conductor—core network controller from a major vendor; can disrupt enterprise network infrastructure and is high-profile.
CVE-2026-103406
Remote root RCE in Juniper Session Smart Conductor via crafted salt minion ID
Is CVE-2026-103406 being exploited?
Not confirmed. CVE-2026-103406 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.
How severe is CVE-2026-103406?
CVE-2026-103406 is rated Critical with a CVSS score of 9.8. 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-2026-103406?
Not known from our data. No patch reference has been recorded for CVE-2026-103406, 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-2026-103406 affect?
CVE-2026-103406 affects Juniper Session Smart Conductor, AutomatedProvisioner (salt minion ID handling). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-103406?
Isolate affected appliances, restrict management access, apply vendor fix when available, rotate keys/credentials
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote command execution as root via crafted salt minion ID; full system takeover and persistent compromise of network controller.
Immediate action required
- affected< 7.0.5
- affected>= 7.1.0 and < 7.1.7
- affected>= 7.2.0 and < 7.2.3
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.