Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2000-0984 — cisco / ios

The HTTP server in Cisco IOS 12.0 through 12.1 allows local users to cause a denial of service (crash and reload) via a URL containing a "?/" string.

  • Published: Dec 19, 2000
  • Updated: Nov 9, 2025
  • CVE: CVE-2000-0984
  • Severity: Medium
  • Exploit:

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 From Fixed in
cisco / ios 12.1xg 12.1xg.x
cisco / ios 12.1xi 12.1xi.x
cisco / ios 12.1xc 12.1xc.x
cisco / ios 12.1xp 12.1xp.x
cisco / ios 12.0xe 12.0xe.x
cisco / ios 12.0xj 12.0xj.x
cisco / ios 12.1t 12.1t.x
cisco / ios 12.1db 12.1db.x
cisco / ios 12.1xe 12.1xe.x
cisco / ios 12.1xb 12.1xb.x
cisco / ios 12.1xl 12.1xl.x
cisco / ios 12.0xh 12.0xh.x
cisco / ios 12.0t 12.0t.x
cisco / ios 12.1dc 12.1dc.x
cisco / ios 12.1ec 12.1ec.x
cisco / ios 12.0w5 12.0w5.x
cisco / ios 12.1xh 12.1xh.x
cisco / ios 12.0xa 12.0xa.x
cisco / ios 12.1xj 12.1xj.x
cisco / ios 12.1aa 12.1aa.x
cisco / ios 12.1xd 12.1xd.x
cisco / ios 12.1xf 12.1xf.x
cisco / ios 12.1da 12.1da.x
cisco / ios 12.1xa 12.1xa.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.