Vulnerability Database

383,371

Total vulnerabilities in the database

CVE-2004-1446 — juniper / netscreen_screenos

Unknown vulnerability in ScreenOS in Juniper Networks NetScreen firewall 3.x through 5.x allows remote attackers to cause a denial of service (device reboot or hang) via a crafted SSH v1 packet.

  • Published: Dec 31, 2004
  • Updated: Sep 13, 2026
  • CVE: CVE-2004-1446
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Software Affected versions
juniper / netscreen_screenos = 1.7
juniper / netscreen_screenos = 1.64
juniper / netscreen_screenos = 1.66
juniper / netscreen_screenos = 1.66_r2
juniper / netscreen_screenos = 1.73_r1
juniper / netscreen_screenos = 1.73_r2
juniper / netscreen_screenos = 2.0.1_r8
juniper / netscreen_screenos = 2.1
juniper / netscreen_screenos = 2.1_r6
juniper / netscreen_screenos = 2.1_r7
juniper / netscreen_screenos = 2.5
juniper / netscreen_screenos = 2.5r1
juniper / netscreen_screenos = 2.5r2
juniper / netscreen_screenos = 2.5r6
juniper / netscreen_screenos = 2.6.0
juniper / netscreen_screenos = 2.6.1
juniper / netscreen_screenos = 2.6.1r1
juniper / netscreen_screenos = 2.6.1r2
juniper / netscreen_screenos = 2.6.1r3
juniper / netscreen_screenos = 2.6.1r4
juniper / netscreen_screenos = 2.6.1r5
juniper / netscreen_screenos = 2.6.1r6
juniper / netscreen_screenos = 2.6.1r7
juniper / netscreen_screenos = 2.6.1r8
juniper / netscreen_screenos = 2.6.1r9
juniper / netscreen_screenos = 2.6.1r10
juniper / netscreen_screenos = 2.6.1r11
juniper / netscreen_screenos = 2.6.1r12
juniper / netscreen_screenos = 2.7.1
juniper / netscreen_screenos = 2.7.1r1
juniper / netscreen_screenos = 2.7.1r2
juniper / netscreen_screenos = 2.7.1r3
juniper / netscreen_screenos = 2.8
juniper / netscreen_screenos = 2.8_r1
juniper / netscreen_screenos = 2.10_r3
juniper / netscreen_screenos = 2.10_r4
juniper / netscreen_screenos = 3.0.0
juniper / netscreen_screenos = 3.0.0r1
juniper / netscreen_screenos = 3.0.0r2
juniper / netscreen_screenos = 3.0.0r3
juniper / netscreen_screenos = 3.0.0r4
juniper / netscreen_screenos = 3.0.1
juniper / netscreen_screenos = 3.0.1r1
juniper / netscreen_screenos = 3.0.1r2
juniper / netscreen_screenos = 3.0.1r3
juniper / netscreen_screenos = 3.0.1r4
juniper / netscreen_screenos = 3.0.1r5
juniper / netscreen_screenos = 3.0.1r6
juniper / netscreen_screenos = 3.0.1r7
juniper / netscreen_screenos = 3.0.2
juniper / netscreen_screenos = 3.0.3
juniper / netscreen_screenos = 3.0.3_r1.1
juniper / netscreen_screenos = 3.0.3r1
juniper / netscreen_screenos = 3.0.3r2
juniper / netscreen_screenos = 3.0.3r3
juniper / netscreen_screenos = 3.0.3r4
juniper / netscreen_screenos = 3.0.3r5
juniper / netscreen_screenos = 3.0.3r6
juniper / netscreen_screenos = 3.0.3r7
juniper / netscreen_screenos = 3.0.3r8
juniper / netscreen_screenos = 3.1.0
juniper / netscreen_screenos = 3.1.0r1
juniper / netscreen_screenos = 3.1.0r2
juniper / netscreen_screenos = 3.1.0r3
juniper / netscreen_screenos = 3.1.0r4
juniper / netscreen_screenos = 3.1.0r5
juniper / netscreen_screenos = 3.1.0r6
juniper / netscreen_screenos = 3.1.0r7
juniper / netscreen_screenos = 3.1.0r8
juniper / netscreen_screenos = 3.1.0r9
juniper / netscreen_screenos = 3.1.0r10
juniper / netscreen_screenos = 3.1.0r11
juniper / netscreen_screenos = 3.1.0r12
juniper / netscreen_screenos = 3.1.1_r2
juniper / netscreen_screenos = 4.0.0
juniper / netscreen_screenos = 4.0.0r1
juniper / netscreen_screenos = 4.0.0r2
juniper / netscreen_screenos = 4.0.0r3
juniper / netscreen_screenos = 4.0.0r4
juniper / netscreen_screenos = 4.0.0r5
juniper / netscreen_screenos = 4.0.0r6
juniper / netscreen_screenos = 4.0.0r7
juniper / netscreen_screenos = 4.0.0r8
juniper / netscreen_screenos = 4.0.0r9
juniper / netscreen_screenos = 4.0.0r10
juniper / netscreen_screenos = 4.0.0r11
juniper / netscreen_screenos = 4.0.0r12
juniper / netscreen_screenos = 4.0.1
juniper / netscreen_screenos = 4.0.1r1
juniper / netscreen_screenos = 4.0.1r2
juniper / netscreen_screenos = 4.0.1r3
juniper / netscreen_screenos = 4.0.1r4
juniper / netscreen_screenos = 4.0.1r5
juniper / netscreen_screenos = 4.0.1r6
juniper / netscreen_screenos = 4.0.1r7
juniper / netscreen_screenos = 4.0.1r8
juniper / netscreen_screenos = 4.0.1r9
juniper / netscreen_screenos = 4.0.1r10
juniper / netscreen_screenos = 4.0.2
juniper / netscreen_screenos = 4.0.3
juniper / netscreen_screenos = 4.0.3r1
juniper / netscreen_screenos = 4.0.3r2
juniper / netscreen_screenos = 4.0.3r3
juniper / netscreen_screenos = 4.0.3r4
juniper / netscreen_screenos = 5.0.0

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.