CVE-2026-102061
8.8HighPublished 14 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-121
Impact
Adjacent unauthenticated attackers can execute arbitrary code as root on affected Juniper devices. They need local network access to send a malicious DHCP SZTP bootstrap message during provisioning.
Root cause
A stack-based buffer overflow in the phone-home daemon (phcd) fails to safely process incoming DHCP Secure Zero Touch Provisioning (SZTP) bootstrap payloads.
Affected systems
Versions not listed — check the vendor advisory (affects Junos OS and Junos OS Evolved platforms supporting Secure-ZTP).
CVSS v3.1 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Upgrade to the patched Junos OS / Junos OS Evolved releases specified in advisory JSA112187. As an interim workaround, disable the phone-home daemon/Secure-ZTP client or isolate adjacent broadcast domains handling DHCP bootstrap traffic.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
A Stack-based Buffer Overflow vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to execute arbitrary code as root via a crafted DHCP SZTP bootstrap message. This issue only affects platforms that support Secure-ZTP.