CVE-2026-103408 Juniper Networks Session Smart Router - Remote Code Execution

Juniper Networks Session Smart Router contains a stack buffer overflow caused by improper handling of DHCP replies in the DHCP client, letting unauthenticated local attackers execute remote code.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-121

Vendor fix

Update to the latest version of Juniper Networks Session Smart Router.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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