Remote root code execution in Juniper Junos (widely deployed network OS). Can compromise network infrastructure and routing, affecting many enterprises and carriers.
CVE-2026-102061
Adjacent RCE to root via DHCP SZTP buffer overflow in Juniper phcd (Secure‑ZTP).
Is CVE-2026-102061 being exploited?
Not confirmed. CVE-2026-102061 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-2026-102061?
CVE-2026-102061 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-2026-102061?
Not known from our data. No patch reference has been recorded for CVE-2026-102061, 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-2026-102061 affect?
CVE-2026-102061 affects Juniper Junos OS, Juniper Junos OS Evolved, phcd (phone-home daemon), Platforms with Secure-ZTP enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-102061?
Apply vendor guidance, disable Secure-ZTP and restrict DHCP/SZTP adjacency until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Adjacent unauthenticated attacker can send crafted DHCP SZTP bootstrap to execute arbitrary code as root, fully compromise device and pivot across network.
Immediate action required
- affected< 23.2R2-S7.7
- affected>= 23.4 and < 23.4R2-S8.13
- affected>= 24.2 and < 24.2R2-S5.5
- affected>= 24.4 and < 24.4R2-S5
- affected>= 25.2 and < 25.2R2-S2
- affected>= 25.4 and < 25.4R1-S3
- affected>= 26.2 and < 26.2R1-S2
- affected< 23.2R2-S7.7-EVO
- affected>= 23.4 and < 23.4R2-S8.11-EVO
- affected>= 24.2 and < 24.2R2-S5.6-EVO
- 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.