CVE-2026-21920 Junos OS: SRX Series: If a specific request is processed by the DNS subsystem flowd will crash

An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd will...

CVE-2026-21917

An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX device configured for UTM Web-Filtering receives a specifical...

CVE-2026-21912

CVE-2026-21912 is a TOCTOU race in Juniper Junos OS on MX10k Series affecting LC480/LC2101 line cards. Repeatedly running the CLI command “show system firmware” can cause a line card to crash and restart, with chassisd potentially crashing and generating a core dump after the line card failure. A...

EUVD-2026-2682

A Time-of-check Time-of-use TOCTOU Race Condition vulnerability in the method to collect FPC Ethernet firmware statistics of Juniper Networks Junos OS on MX10k Series allows a local, low-privileged attacker executing the 'show system firmware' CLI command to cause an LC480 or LC2101 line card to...

EUVD-2026-2694

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

CVE-2026-21907 Junos Space: TLS/SSL server supports use of static key ciphers (ssl-static-key-ciphers)

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21906 Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

EUVD-2026-2702

An Incorrect Permission Assignment for Critical Resource vulnerability in the Juniper DHCP daemon jdhcpd of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to write to the Unix socket used to manage the jdhcpd process, resulting in complete control over the...

CVE-2025-59960

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Juniper DHCP service jdhcpd of Juniper Networks Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service DoS on the downstream DHCP...

EUVD-2026-2718

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Juniper DHCP service jdhcpd of Juniper Networks Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service DoS on the downstream DHCP...

EUVD-2026-2709

A clickjacking vulnerability exists in the web portal of Juniper Networks Paragon Automation Pathfinder, Planner, Insights due to the application's failure to set appropriate X-Frame-Options and X-Content-Type HTTP headers. This vulnerability allows an attacker to trick users into interacting wit...

Juniper Networks Paragon Automation security vulnerabilities

Juniper Networks Paragon Automation is an automation and operations platform provided by the American company Juniper Networks. Versions of Juniper Networks Paragon Automation prior to 24.1.1 contained security vulnerabilities. These vulnerabilities stemmed from the lack of appropriate...

PT-2026-3122

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions 23.2R2-S1 through 23.2R2-S4 Juniper Networks Junos OS versions 23.4R2 through 23.4R2-S5 Juniper Networks Junos OS versions 24.2 through 24.2R2-S2 Juniper Networks Junos OS versions 24.4 through 24.4R2 Juniper...

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved security vulnerabilities

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved are both products of Juniper Networks, a US-based company. Juniper Networks Junos OS is a network operating system specifically designed for the company’s hardware devices. This operating system provides secure programming interfaces...

Juniper Networks Junos OS resource management error vulnerability

Juniper Networks Junos OS is a network operating system specifically designed for hardware devices used by Juniper Networks. This operating system provides secure programming interfaces and the Junos SDK. Versions of Junos OS prior to 22.4R3-S7, 23.2R2-S3, 23.4R2-S4, and 24.2R2 contain a resource...

PT-2026-3109

An Incorrect Permission Assignment for Critical Resource vulnerability in the Juniper DHCP daemon jdhcpd of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to write to the Unix socket used to manage the jdhcpd process, resulting in complete control over the...

PT-2026-3108

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Juniper DHCP service jdhcpd of Juniper Networks Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service DoS on the downstream DHCP...

Juniper Junos OS Vulnerability (JSA103166)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA103166 advisory. - A Buffer Over-read vulnerability in the routing protocol daemon rpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to...

CVE-2009-4643

Stack-based buffer overflow in dsInstallerService.dll in the Juniper Installer Service, as used in Juniper Odyssey Access Client 4.72.11421.0 and other products, allows remote attackers to execute arbitrary code via a long string in a malformed DSSETUPSERVICECMDUNINSTALL command to the...

CVE-2022-31173

Juniper is a GraphQL server library for Rust. Affected versions of Juniper are vulnerable to uncontrolled recursion resulting in a program crash. This issue has been addressed in version 0.15.10. Users are advised to upgrade. Users unable to upgrade should limit the recursion depth manually...