CVE-2026-101983 CRITICAL

CVE-2026-101983: Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured

Vendor Juniper Networks
Product Junos OS
Weakness CWE-121
Published October 14, 2026
Last update October 15, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A Stack-based Buffer Overflow vulnerability in the httpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to cause remote code execution and denial of service via a J-Web virtual-domain configured.

Key dates

02Disclosure timeline

October 14, 2026 CVE published
October 15, 2026 Record updated