CVE-2026-103392
Session Smart Router: A SACK option causes out-of-bounds memory access and TCP payload corruption when TCP sequence stitching is enabled
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | juniper networks |
| Product | session smart router |
| Published | Oct 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Juniper Networks / Session Smart Router
0 < 7.0.5 7.1.0 < 7.1.7 7.2.0 < 7.2.3