Quick answers
- Is CVE-2026-103410 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103410 being exploited in the wild.
- How severe is CVE-2026-103410?
- High severity, with a CVSS score of 7.5, published 28 October 2026.
- Which products and versions are affected?
- Juniper Networks Session Smart Router.
- Is there a fix for CVE-2026-103410?
- 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-2026-103410 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-103410?
- Check whether you run 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 integer overflow in the DPI certificate scanner component can be triggered by a specially crafted TLS server certificate sent over the network. The vulnerability requires no authentication and results in denial of service via device crash. The attack is remotely exploitable due to the DPI scanner's network-facing certificate inspection function.
Affected products
- Juniper Networks Session Smart Router
Timeline
- 2026-10-28: disclosed