Quick answers
- Is CVE-2026-102059 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102059 being exploited in the wild.
- How severe is CVE-2026-102059?
- High severity, with a CVSS score of 8.8, published 14 October 2026.
- Which products and versions are affected?
- Juniper Networks Junos OS <UNKNOWN>; Juniper Networks Junos OS Evolved <UNKNOWN>.
- Is there a fix for CVE-2026-102059?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-102059 attacked?
- It is attacked from the adjacent network or over the network, in an operating system.
- Am I affected by CVE-2026-102059?
- Check whether you run Juniper Networks Junos OS or Juniper Networks Junos OS Evolved at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An OS command injection vulnerability exists in the phone-home daemon (phcd) where unsanitized input from DHCP responses is passed to shell commands. An adjacent unauthenticated attacker can exploit this by running a rogue DHCP server to inject arbitrary commands that execute with root privileges on affected EX, SRX, and QFX Series devices.
Affected products
- Juniper Networks Junos OS <UNKNOWN>
- Juniper Networks Junos OS Evolved <UNKNOWN>
Timeline
- 2026-10-14: disclosed