Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2 initialization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5$0-$5k1.04

Summaryinfo

A vulnerability categorized as critical has been discovered in Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2. Affected by this issue is some unknown functionality. Executing a manipulation can lead to initialization. The identification of this vulnerability is CVE-2026-103394. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Juniper Session Smart Router up to 7.0.4/7.1.6/7.2.2 and classified as critical. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. As an impact it is known to affect availability. CVE summarizes:

An Improper Initialization vulnerability in the SSR software in Juniper Networks Session Smart Router allows an attacker to decrypt traffic or cause a denial of service via security policy assignment.

The advisory is shared for download at supportportal.juniper.net. This vulnerability was named CVE-2026-103394 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. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/28/2026).

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.7
CNA Vector (juniper): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Session Smart Router 7.0.5/7.1.7/7.2.3

Timelineinfo

09/30/2026 CVE reserved
10/28/2026 +28 days Advisory disclosed
10/28/2026 +0 days VulDB entry created
10/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: supportportal.juniper.net
Status: Confirmed

CVE: CVE-2026-103394 (🔒)
GCVE (CVE): GCVE-0-2026-103394
GCVE (VulDB): GCVE-100-428044

Entryinfo

Created: 10/28/2026 18:03
Changes: 10/28/2026 18:03 (63)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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