High severity · published Oct 28, 2026
CVE-2026-103403
Session Smart Router and Session Smart Conductor: Unvalidated input causes arbitrary file deletion and command execution when deleting audit rules
New
8.8
CVSS
–
EPSS
No
On KEV
Description
An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in AccessManager in Juniper Networks Session Smart Router and Session Smart Conductor allows an attacker to perform arbitrary file deletion and arbitrary command execution via the deletion of an audit rule.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Session Smart Conductor · Juniper Networks
before 7.0.5; 7.1.0 before 7.1.7; 7.2.0 before 7.2.3 · source: vendor
SS
Session Smart Router · Juniper Networks
before 7.0.5; 7.1.0 before 7.1.7; 7.2.0 before 7.2.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103403
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103403
vendor-advisory
https://supportportal.juniper.net/JSA112183
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