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Juniper Junos OS Multiple Vulnerabilities

Hkcert • October 15, 2026

Multiple vulnerabilities were identified in Juniper Junos OS. A remote attacker could exploit some of these vulnerabilities to trigger denial of service condition, data manipulation, sensitive information disclosure, elevation of privilege and security restriction bypass on the targeted system.

Information Disclosure

Security Restriction Bypass

Elevation of Privilege

System / Technologies affected

Please refer to the link below for detail:

Before installation of the software, please visit the vendor web-site for more details.

Please refer to 2026-10 Security Bulletin .

Vulnerability Identifier

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Vulnerabilities in Juniper Junos OS Require Immediate Patching Juniper Networks has disclosed multiple critical vulnerabilities in Junos OS and Junos OS Evolved, which are remotely exploitable without authentication. The vulnerabilities include CVE-2026-101954, an improper authentication flaw in the J-Web management interface, and CVE-2026-101982, a stack-based buffer overflow in the routing protocol daemon. Both vulnerabilities have a CVSS score of 9.8, indicating critical severity. Successful exploitation could lead to full device takeover, remote code execution, and denial of service, impacting enterprise networks' operational stability. Organizations are urged to upgrade affected systems immediately as per the October 2026 Security Bulletin. The Centre for Cybersecurity Belgium recommends heightened monitoring for suspicious activity. Patching is essential to prevent potential data breaches and operational downtime. 3 sources 72

Extracted Entities

Juniper Junos OS Multiple Vulnerabilities

The full story

Extracted Entities

Attack Types (4)

CWE Weaknesses (1)

Platforms (1)