Vulnerability Database

383,371

Total vulnerabilities in the database

CVE-2002-1024 — cisco / ios

Resource Management Errors

Cisco IOS 12.0 through 12.2, when supporting SSH, allows remote attackers to cause a denial of service (CPU consumption) via a large packet that was designed to exploit the SSH CRC32 attack detection overflow (CVE-2001-0144).

  • Published: Oct 4, 2002
  • Updated: Sep 13, 2026
  • CVE: CVE-2002-1024
  • Severity: High
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: High
  • Score: 7.1
  • AV:N/AC:M/Au:N/C:N/I:N/A:C

CWEs:

Software Affected versions
cisco / ios = 12.0s
cisco / ios = 12.0sp
cisco / ios = 12.0st
cisco / ios = 12.0xb
cisco / ios = 12.0xm
cisco / ios = 12.0xv
cisco / ios = 12.1(1)ex
cisco / ios = 12.1(5c)ex
cisco / ios = 12.1(8a)ex
cisco / ios = 12.1(9)ex
cisco / ios = 12.1e
cisco / ios = 12.1ec
cisco / ios = 12.1t
cisco / ios = 12.1xb
cisco / ios = 12.1xc
cisco / ios = 12.1xf
cisco / ios = 12.1xg
cisco / ios = 12.1xh
cisco / ios = 12.1xi
cisco / ios = 12.1xj
cisco / ios = 12.1xl
cisco / ios = 12.1xm
cisco / ios = 12.1xp
cisco / ios = 12.1xq
cisco / ios = 12.1xt
cisco / ios = 12.1xu
cisco / ios = 12.1yb
cisco / ios = 12.1yc
cisco / ios = 12.1yd
cisco / ios = 12.1ye
cisco / ios = 12.1yf
cisco / ios = 12.1yi
cisco / ios = 12.2
cisco / ios = 12.2b
cisco / ios = 12.2bc
cisco / ios = 12.2da
cisco / ios = 12.2dd
cisco / ios = 12.2s
cisco / ios = 12.2t
cisco / ios = 12.2xa
cisco / ios = 12.2xb
cisco / ios = 12.2xd
cisco / ios = 12.2xe
cisco / ios = 12.2xf
cisco / ios = 12.2xg
cisco / ios = 12.2xh
cisco / ios = 12.2xi
cisco / ios = 12.2xj
cisco / ios = 12.2xk
cisco / ios = 12.2xl
cisco / ios = 12.2xm
cisco / ios = 12.2xn
cisco / ios = 12.2xq
cisco / ios = 12.2xr
cisco / ios = 12.2xs
cisco / ios = 12.2xt
cisco / ios = 12.2xw
cisco / ios = 12.2ya
cisco / ios = 12.2yb
cisco / ios = 12.2yc
cisco / ios = 12.2yd
cisco / ios = 12.2yf
cisco / ios = 12.2yg
cisco / ios = 12.2yh
cisco / pix_firewall_software = 5.2
cisco / pix_firewall_software = 5.3
cisco / pix_firewall_software = 6.0
cisco / pix_firewall_software = 6.1
cisco / pix_firewall_software = 6.2
cisco / catos = 5.3(1)csx
cisco / catos = 5.3(1a)csx
cisco / catos = 5.3(2)csx
cisco / catos = 5.3(3)csx
cisco / catos = 5.3(4)csx
cisco / catos = 5.3(5)csx
cisco / catos = 5.3(5a)csx
cisco / catos = 5.3(6)csx
cisco / catos = 5.4
cisco / catos = 5.4(1)
cisco / catos = 5.4(2)
cisco / catos = 5.4(3)
cisco / catos = 5.4(4)
cisco / catos = 5.5
cisco / catos = 5.5(1)
cisco / catos = 5.5(2)
cisco / catos = 5.5(3)
cisco / catos = 5.5(4)
cisco / catos = 5.5(4a)
cisco / catos = 5.5(4b)
cisco / catos = 5.5(13)
cisco / catos = 6.1(1)
cisco / catos = 6.1(1a)
cisco / catos = 6.1(1b)
cisco / catos = 6.1(1c)
cisco / catos = 6.1(2.13)
cisco / catos = 6.2(0.110)
cisco / catos = 6.2(0.111)
cisco / catos = 6.3(0.7)pan
cisco / catos = 6.3(4)
cisco / catos = 7.1
cisco / catos = 7.1(2)

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.