CVE-2026-103392 — MEDIUM (4.8)

Vulnerability 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.

CVSS Score

4.8

MEDIUM

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

Related Weaknesses (CWE)

CWE-787

References

https://supportportal.juniper.net/JSA112183

FAQ

What is CVE-2026-103392?

CVE-2026-103392 is a vulnerability with a CVSS score of 4.8 (MEDIUM). 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 desynchronizatio...

How severe is CVE-2026-103392?

CVE-2026-103392 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-103392?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.