ThreatRoundup

CVE-2026-103410: Juniper Networks Session Smart Router (High, CVSS 7.5)

Remote Attacker

CVE record · updated

CVE-2026-103410HighJuniper Networks Session Smart Router
CVSS
7.5 High (v3.1)
Exploited in the wild
Not on CISA’s KEV list
Public exploit
None reported in public exploit databases
Weakness
CWE-190, CWE-835
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Oct 28, 2026

What it is

An Integer Overflow vulnerability in the DPI certificate scanner in Juniper Networks Session Smart Router allows an unauthenticated remote attacker to cause a denial of service via a specially crafted TLS server certificate.

Description from the National Vulnerability Database.

What to do

Check whether you run Juniper Networks Session Smart Router, then apply the vendor’s fix or mitigation from the advisories below.

Sources: NVD, FIRST EPSS, CISA KEV, and public exploit databases (availability only). ThreatRoundup reports whether public exploit code exists but never links to it: fake proof-of-concepts that infect security researchers are common. This page updates automatically.