VDB
CVE-2026-33779
CVE-2026-33779
PUBLISHED
CVSS 6.5 MEDIUM
An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it. When an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information. This issue affects Junos OS: * all versions before 22.4R3-S9, * 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S7, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S2, * 25.2 versions before 25.2R1-S2, 25.2R2.
EPSS 0.03% · 7.7th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS Score
0.03%
7.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS | 0, 23.2, 23.4 |
Timeline
- Apr 9, 2026 CVE Published
- Apr 9, 2026 PoC Published
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score
References
- https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-CVE-2022-24805-resolved-in-net-SNMP advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
- 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 advisory
…and 6 more