Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2018-0008 — juniper / junos

Improper Authentication

An unauthenticated root login may allow upon reboot when a commit script is used. A commit script allows a device administrator to execute certain instructions during commit, which is configured under the [system scripts commit] stanza. Certain commit scripts that work without a problem during normal commit may cause unexpected behavior upon reboot which can leave the system in a state where root CLI login is allowed without a password due to the system reverting to a "safe mode" authentication state. Lastly, only logging in physically to the console port as root, with no password, will work. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D71 on SRX; 12.3X48 versions prior to 12.3X48-D55 on SRX; 14.1 versions prior to 14.1R9; 14.1X53 versions prior to 14.1X53-D40 on QFX, EX; 14.2 versions prior to 14.2R7-S9, 14.2R8; 15.1 versions prior to 15.1F5-S7, 15.1F6-S8, 15.1R5-S6, 15.1R6; 15.1X49 versions prior to 15.1X49-D110 on SRX; 15.1X53 versions prior to 15.1X53-D232 on QFX5200/5110; 15.1X53 versions prior to 15.1X53-D49, 15.1X53-D470 on NFX; 15.1X53 versions prior to 15.1X53-D65 on QFX10K; 16.1 versions prior to 16.1R2. No other Juniper Networks products or platforms are affected by this issue.

  • Published: Jan 10, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2018-0008
  • Severity: High
  • Exploit:

CVSS v2:

  • Severity: High
  • Score: 7.2
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
Software From Fixed in
juniper / junos 12.1x46-d60 12.1x46-d60.x
juniper / junos 12.1x46-d30 12.1x46-d30.x
juniper / junos 12.1x46-d45 12.1x46-d45.x
juniper / junos 12.1x46-d50 12.1x46-d50.x
juniper / junos 12.1x46-d25 12.1x46-d25.x
juniper / junos 12.1x46 12.1x46.x
juniper / junos 12.1x46-d65 12.1x46-d65.x
juniper / junos 12.1x46-d35 12.1x46-d35.x
juniper / junos 12.1x46-d20 12.1x46-d20.x
juniper / junos 12.1x46-d40 12.1x46-d40.x
juniper / junos 12.1x46-d15 12.1x46-d15.x
juniper / junos 12.1x46-d10 12.1x46-d10.x
juniper / junos 12.1x46-d55 12.1x46-d55.x
juniper / junos 12.3x48-d10 12.3x48-d10.x
juniper / junos 12.3x48-d15 12.3x48-d15.x
juniper / junos 12.3x48-d35 12.3x48-d35.x
juniper / junos 12.3x48-d50 12.3x48-d50.x
juniper / junos 12.3x48-d30 12.3x48-d30.x
juniper / junos 12.3x48 12.3x48.x
juniper / junos 12.3x48-d25 12.3x48-d25.x
juniper / junos 12.3x48-d45 12.3x48-d45.x
juniper / junos 12.3x48-d20 12.3x48-d20.x
juniper / junos 12.3x48-d40 12.3x48-d40.x
juniper / junos 15.1x49-d50 15.1x49-d50.x
juniper / junos 15.1x49-d30 15.1x49-d30.x
juniper / junos 15.1x49-d70 15.1x49-d70.x
juniper / junos 15.1x49-d80 15.1x49-d80.x
juniper / junos 15.1x49 15.1x49.x
juniper / junos 15.1x49-d60 15.1x49-d60.x
juniper / junos 15.1x49-d100 15.1x49-d100.x
juniper / junos 15.1x49-d35 15.1x49-d35.x
juniper / junos 15.1x49-d45 15.1x49-d45.x
juniper / junos 15.1x49-d75 15.1x49-d75.x
juniper / junos 15.1x49-d65 15.1x49-d65.x
juniper / junos 15.1x49-d90 15.1x49-d90.x
juniper / junos 15.1x49-d40 15.1x49-d40.x
juniper / junos 15.1x49-d20 15.1x49-d20.x
juniper / junos 15.1x49-d10 15.1x49-d10.x
juniper / junos 15.1x49-d55 15.1x49-d55.x
juniper / junos 14.1-r1 14.1-r1.x
juniper / junos 14.1-r4 14.1-r4.x
juniper / junos 14.1 14.1.x
juniper / junos 14.1-r3 14.1-r3.x
juniper / junos 14.1-r7 14.1-r7.x
juniper / junos 14.1-r6 14.1-r6.x
juniper / junos 14.1-r2 14.1-r2.x
juniper / junos 14.1-r5 14.1-r5.x
juniper / junos 14.1x53-d15 14.1x53-d15.x
juniper / junos 14.1x53-d35 14.1x53-d35.x
juniper / junos 14.1x53-d10 14.1x53-d10.x
juniper / junos 14.1x53-d30 14.1x53-d30.x
juniper / junos 14.1x53-d25 14.1x53-d25.x
juniper / junos 14.1x53-d27 14.1x53-d27.x
juniper / junos 14.1x53-d16 14.1x53-d16.x
juniper / junos 14.1x53 14.1x53.x
juniper / junos 14.1x53-d26 14.1x53-d26.x
juniper / junos 14.2-r1 14.2-r1.x
juniper / junos 14.2-r2 14.2-r2.x
juniper / junos 14.2-r3 14.2-r3.x
juniper / junos 14.2-r6 14.2-r6.x
juniper / junos 14.2 14.2.x
juniper / junos 14.2-r8 14.2-r8.x
juniper / junos 14.2-r7 14.2-r7.x
juniper / junos 14.2-r4 14.2-r4.x
juniper / junos 14.2-r5 14.2-r5.x
juniper / junos 15.1-f1 15.1-f1.x
juniper / junos 15.1-f2-s3 15.1-f2-s3.x
juniper / junos 15.1-f2-s2 15.1-f2-s2.x
juniper / junos 15.1-r6 15.1-r6.x
juniper / junos 15.1-f4 15.1-f4.x
juniper / junos 15.1-f2-s4 15.1-f2-s4.x
juniper / junos 15.1-f2 15.1-f2.x
juniper / junos 15.1-a1 15.1-a1.x
juniper / junos 15.1-f3 15.1-f3.x
juniper / junos 15.1-f2-s1 15.1-f2-s1.x
juniper / junos 15.1-f5 15.1-f5.x
juniper / junos 15.1 15.1.x
juniper / junos 15.1-f6-s8 15.1-f6-s8.x
juniper / junos 15.1-r5-s6 15.1-r5-s6.x
juniper / junos 15.1x53-d62 15.1x53-d62.x
juniper / junos 15.1x53-d20 15.1x53-d20.x
juniper / junos 15.1x53-d30 15.1x53-d30.x
juniper / junos 15.1x53 15.1x53.x
juniper / junos 15.1x53-d33 15.1x53-d33.x
juniper / junos 15.1x53-d25 15.1x53-d25.x
juniper / junos 15.1x53-d63 15.1x53-d63.x
juniper / junos 15.1x53-d32 15.1x53-d32.x
juniper / junos 15.1x53-d34 15.1x53-d34.x
juniper / junos 15.1x53-d210 15.1x53-d210.x
juniper / junos 15.1x53-d70 15.1x53-d70.x
juniper / junos 15.1x53-d21 15.1x53-d21.x
juniper / junos 15.1x53-d60 15.1x53-d60.x
juniper / junos 15.1x53-d61 15.1x53-d61.x
juniper / junos 15.1x53-d230 15.1x53-d230.x
juniper / junos 15.1x53-d470 15.1x53-d470.x
juniper / junos 15.1x53-d57 15.1x53-d57.x
juniper / junos 15.1x53-d64 15.1x53-d64.x
juniper / junos 15.1x53-d50 15.1x53-d50.x
juniper / junos 15.1x53-d51 15.1x53-d51.x
juniper / junos 15.1x53-d52 15.1x53-d52.x
juniper / junos 15.1x53-d55 15.1x53-d55.x
juniper / junos 16.1-r1 16.1-r1.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.