Vulnerability · Published Oct 28, 2026 · Assigned by juniper
CVE-2026-103408Session Smart Router: An attacker-controlled input causes remote code execution when parsing DHCP options
High 8.8
In plain English
A high-severity stack buffer overflow in Session Smart Router from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 76.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A Stack Buffer Overflow vulnerability in the DHCP client in Juniper Networks Session Smart Router allows an unauthenticated attacker on the local network to achieve remote code execution via a malicious DHCP reply.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Session Smart Router | 0 – before 7.0.57.1.0 – before 7.1.77.2.0 – before 7.2.3 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://supportportal.juniper.net/JSA112183 vendor-advisory