CVE-2026-103411 — HIGH (7.1)

Vulnerability Description

An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-191

References

https://supportportal.juniper.net/JSA112183

FAQ

What is CVE-2026-103411?

CVE-2026-103411 is a vulnerability with a CVSS score of 7.1 (HIGH). An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service v...

How severe is CVE-2026-103411?

CVE-2026-103411 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-103411?

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