Quick answers
- Is CVE-2026-103403 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103403 being exploited in the wild.
- How severe is CVE-2026-103403?
- High severity, with a CVSS score of 8.8, published 28 October 2026.
- Which products and versions are affected?
- Juniper Networks Session Smart Router; Juniper Networks Session Smart Conductor.
- Is there a fix for CVE-2026-103403?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-103403 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-103403?
- Check whether you run Juniper Networks Session Smart Conductor or Juniper Networks Session Smart Router. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An improper neutralization of special elements in OS command construction within AccessManager's audit rule deletion feature allows command injection. An attacker can inject shell metacharacters to execute arbitrary OS commands and delete files with the privileges of the AccessManager process. The vulnerability is triggered through the audit rule deletion functionality via network or local access.
Affected products
- Juniper Networks Session Smart Router
- Juniper Networks Session Smart Conductor
Timeline
- 2026-10-28: disclosed