Security Alert (A26-04-11): Multiple Vulnerabilities in Juniper Networks Products


 

Published on: 09 April 2026

Description:

Juniper Networks has published security advisories to address multiple vulnerabilities in Juniper Networks Apstra, CTP OS, Junos OS, Junos OS Evolved, Junos Space and Support Insights Virtual Lightweight Collector. For detailed information about the vulnerabilities, please refer to the corresponding security advisories at vendor's website.

 

Affected Systems:

  • Juniper Networks Apstra
  • Juniper Networks CTP OS
  • Juniper Networks Junos OS
  • Juniper Networks Junos OS Evolved
  • Juniper Networks Junos Space
  • Juniper Networks Support Insights Virtual Lightweight Collector

For detailed information of the affected systems, please refer to the corresponding security advisories at vendor's website.

 

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, denial of service, elevation of privilege, information disclosure, security restriction bypass or spoofing on an affected system.

 

Recommendation:

Patches for affected systems are available. System administrators of affected systems should follow the recommendations provided by the vendor and take immediate actions to mitigate the risk.

 

More Information:

  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Apstra-SSH-host-key-validation-vulnerability-for-managed-devices-CVE-2025-13914
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-CTP-OS-Configuring-password-requirements-does-not-work-which-permits-the-use-of-weak-passwords-CVE-2026-33771
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-JSI-Virtual-Lightweight-Collector-Shell-escape-allows-privilege-escalation-to-root-CVE-2026-21915
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-A-low-privileged-user-can-escalate-their-privileges-so-that-they-can-login-as-root-CVE-2026-21916
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-EX-Series-QFX-Series-If-the-same-egress-filter-is-configured-on-both-an-IRB-and-a-physical-interface-one-of-those-is-not-applied-CVE-2026-33773
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-EX-Series-QFX-Series-In-a-VXLAN-scenario-when-specific-control-protocol-packets-are-received-memory-leaks-and-eventually-no-traffic-is-passed-CVE-2026-33781
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-Evolved-Local-authenticated-attackers-can-gain-access-to-FPCs-CVE-2026-33788
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-Evolved-PTX-Series-If-SRTE-tunnels-provisioned-via-PCEP-are-present-and-specific-gRPC-queries-are-received-evo-aftman-crashes-CVE-2026-33783
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-Evolved-QFX5000-Series-and-PTX-Series-An-attacker-sending-crafted-multicast-packets-will-cause-evo-aftmand-evo-pfemand-to-crash-and-restart-CVE-2025-59969
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-MX-Series-Firewall-filters-on-lo0-non-0-in-the-default-routing-instance-are-not-in-effect-CVE-2026-33774
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-MX-Series-In-specific-DHCPv6-scenarios-jdhcpd-memory-increases-continuously-with-subscriber-logouts-CVE-2026-33782
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-MX-Series-Mismatch-between-configured-and-received-packet-types-causes-memory-leak-in-bbe-smgd-CVE-2026-33775
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-MX-Series-Missing-Authorization-for-specific-request-CLI-commands-in-a-JDM-CSDS-scenario-CVE-2026-33785
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-Privileged-local-user-can-gain-access-to-a-Linux-based-FPC-as-root-CVE-2025-30650
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-SRX-Series-In-a-NAT64-configuration-receipt-of-a-specific-malformed-ICMPv6-packet-will-cause-the-srxpfe-process-to-crash-and-restart-CVE-2026-33790
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-SRX-Series-Insufficient-certificate-verification-for-device-to-SD-cloud-communication-CVE-2026-33779
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-SRX-Series-MX-Series-When-a-specifically-malformed-first-ISAKMP-packet-is-received-kmd-iked-crashes-CVE-2026-33778
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-SRX1500-SRX4100-SRX4200-SRX4600-When-a-specific-show-command-is-executed-chassisd-crashes-CVE-2026-33787
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-SRX1600-SRX2300-SRX4300-When-a-specific-show-command-is-executed-chassisd-crashes-CVE-2026-33786
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-A-high-frequency-of-connecting-and-disconnecting-netconf-sessions-causes-management-unavailability-CVE-2026-21919
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-An-attacker-sending-a-specific-genuine-BGP-packet-causes-a-BGP-reset-CVE-2026-33797
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-CVE-2022-24805-resolved-in-net-SNMP
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Execution-of-crafted-CLI-commands-allows-for-arbitrary-shell-injection-as-root-CVE-2026-33791
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-an-EVPN-MPLS-scenario-churn-of-ESI-routes-causes-a-memory-leak-in-l2ald-CVE-2026-33780
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Specific-low-privileged-CLI-command-exposes-sensitive-information-CVE-2026-33776
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-an-unsigned-Python-op-script-configuration-is-present-a-local-low-privileged-user-can-compromise-the-system-CVE-2026-33793
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-Space-ilpFilter-field-on-nLegacy-jsp-is-vulnerable-to-reflected-cross-site-script-injection-CVE-2026-21904
  • https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-vLWC-Default-password-is-not-required-to-be-changed-which-allows-unauthorized-high-privileged-access-CVE-2026-33784
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24805
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-13914
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30650
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-59969
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21904
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21915 (to CVE-2026-21916)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21919
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33771
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33773 (to CVE-2026-33776)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33778 (to CVE-2026-33788)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33790 (to CVE-2026-33791)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33793
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33797


Tag: Juniper Networks Apstra , CTP OS , Junos OS , Junos OS Evolved , Junos Space , Support Insights Virtual Lightweight Collector
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