Remote unauthenticated root command execution on Juniper Junos OS Evolved networking gear via DHCP; impacts enterprise routing/switching infrastructure and could cause widespread disruption.
CVE-2026-101967
Unauthenticated root RCE in Juniper bootzd via crafted DHCP response
Is CVE-2026-101967 being exploited?
Not confirmed. CVE-2026-101967 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 3.9% probability of exploitation in the next 30 days.
How severe is CVE-2026-101967?
CVE-2026-101967 is rated Critical with a CVSS score of 9.3. 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-2026-101967?
Not known from our data. No patch reference has been recorded for CVE-2026-101967, 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-2026-101967 affect?
CVE-2026-101967 affects Juniper Junos OS Evolved (bootzd daemon), Juniper devices with management LAN reachable, Devices with zero-touch provisioning enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-101967?
Isolate management LAN, block DHCP from untrusted networks, apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker on management LAN can run arbitrary OS commands as root, enabling full device compromise, config manipulation, traffic interception, or persistent backdoors.
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.