CVE-2026-103392
Medium
Description
An Out-of-Bounds Write vulnerability in the TCP header processing in Juniper Networks Session Smart Router allows an attacker to corrupt TCP payload data and potentially cause session desynchronization via a transit TCP packet with an oversized SACK option length.
SeverityMedium
CVSS4.8
Exploit probability—
ProductSession Smart Router
PublishedOct 28, 2026
First seenNov 5, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- Juniper Networks Session Smart Router7.0.5, 7.1.7, 7.2.3 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Juniper Networks Session Smart Router | v < 7.0.5, 7.1.0 ≤ v < 7.1.7, 7.2.0 ≤ v < 7.2.3 | 7.0.5, 7.1.7, 7.2.3 |
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