Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2 DPI Certificate Scanner integer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2. The affected element is an unknown function of the component DPI Certificate Scanner. Executing a manipulation can lead to integer overflow. This vulnerability appears as CVE-2026-103410. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2. It has been declared as critical. This vulnerability affects some unknown functionality of the component DPI Certificate Scanner. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is available at supportportal.juniper.net. This vulnerability was named CVE-2026-103410 since 09/30/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/28/2026).

Upgrading to version 7.0.5, 7.1.7 or 7.2.3 eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Juniper

Name

• Session Smart Router

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6
• 7.2.0
• 7.2.1
• 7.2.2

License

• commercial

Website

• Vendor: https://www.juniper.net/

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