CVE-2018-0055

Receipt of a specially crafted DHCPv6 message destined to a Junos OS device configured as a DHCP server in a Broadband Edge (BBE) environment may result in a jdhcpd daemon crash. The daemon automatically restarts without intervention, but a continuous receipt of crafted DHCPv6 packets could leaded to an extended denial of service condition. This issue only affects Junos OS 15.1 and later. Earlier releases are unaffected by this issue. Devices are only vulnerable to the specially crafted DHCPv6 message if DHCP services are configured. Devices not configured to act as a DHCP server are not vulnerable to this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S2; 15.1X49 versions prior to 15.1X49-D160; 15.1X53 versions prior to 15.1X53-D235, 15.1X53-D495; 16.1 versions prior to 16.1R4-S11, 16.1R6-S6, 16.1R7-S2; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S9; 17.2 versions prior to 17.2R2-S6; 17.3 versions prior to 17.3R3-S1; 17.4 versions prior to 17.4R1-S5; 18.1 versions prior to 18.1R2-S3; 18.2 versions prior to 18.2R1-S2; 18.2X75 versions prior to 18.2X75-D20.

• CWE-20

• http://www.securitytracker.com/id/1041856Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10889Vendor Advisory
• http://www.securitytracker.com/id/1041856Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10889Vendor Advisory

Published

Oct 10, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-0049A NULL Pointer Dereference vulnerability in Juniper Networks…7.5
• CVE-2018-0050An error handling vulnerability in Routing Protocols Daemon …7.5
• CVE-2018-0051A Denial of Service vulnerability in the SIP application lay…7.5
• CVE-2018-0052If RSH service is enabled on Junos OS and if the PAM authent…7.2
• CVE-2018-0053An authentication bypass vulnerability in the initial boot s…6.8
• CVE-2018-0054On QFX5000 Series and EX4600 switches, a high rate of Ethern…6.5
• CVE-2018-0056If a duplicate MAC address is learned by two different inter…6.5
• CVE-2018-0057On MX Series and M120/M320 platforms configured in a Broadba…6.1
• CVE-2018-0058Receipt of a specially crafted IPv6 exception packet may be …5.9
• CVE-2018-0059A persistent cross-site scripting vulnerability in the graph…5.4
• CVE-2018-0060An improper input validation weakness in the device control …5.3
• CVE-2018-0061A denial of service vulnerability in the telnetd service on …5.3