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.
Published: 2026-10-28
Score: 4.8 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

Vendor Solution

The following software releases of Session Smart Router have been updated to resolve these specific issues: * 7.0.5 and all subsequent releases; * 7.1.7 and all subsequent releases; * 7.2.3 and all subsequent releases.


Vendor Workaround

There are no known workarounds for this issue.

Tracking

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Advisories

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History

Wed, 28 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title Session Smart Router: A SACK option causes out-of-bounds memory access and TCP payload corruption when TCP sequence stitching is enabled
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2026-10-28T16:33:46.534Z

Reserved: 2026-09-30T14:27:56.628Z

Link: CVE-2026-103392

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-28T17:17:22.543

Modified: 2026-10-28T17:17:22.727

Link: CVE-2026-103392

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T18:45:07Z

Weaknesses