Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2002-1024

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: Nov 9, 2025
  • CVE: CVE-2002-1024
  • Severity: High
  • Exploit:

CVSS v2:

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

CWEs:

Software From Fixed in
cisco / ios 12.0s 12.0s.x
cisco / ios 12.0sp 12.0sp.x
cisco / ios 12.0st 12.0st.x
cisco / ios 12.0xb 12.0xb.x
cisco / ios 12.0xm 12.0xm.x
cisco / ios 12.0xv 12.0xv.x
cisco / ios 12.1(1)ex 12.1(1)ex.x
cisco / ios 12.1(5c)ex 12.1(5c)ex.x
cisco / ios 12.1(8a)ex 12.1(8a)ex.x
cisco / ios 12.1(9)ex 12.1(9)ex.x
cisco / ios 12.1e 12.1e.x
cisco / ios 12.1ec 12.1ec.x
cisco / ios 12.1t 12.1t.x
cisco / ios 12.1xb 12.1xb.x
cisco / ios 12.1xc 12.1xc.x
cisco / ios 12.1xf 12.1xf.x
cisco / ios 12.1xg 12.1xg.x
cisco / ios 12.1xh 12.1xh.x
cisco / ios 12.1xi 12.1xi.x
cisco / ios 12.1xj 12.1xj.x
cisco / ios 12.1xl 12.1xl.x
cisco / ios 12.1xm 12.1xm.x
cisco / ios 12.1xp 12.1xp.x
cisco / ios 12.1xq 12.1xq.x
cisco / ios 12.1xt 12.1xt.x
cisco / ios 12.1xu 12.1xu.x
cisco / ios 12.1yb 12.1yb.x
cisco / ios 12.1yc 12.1yc.x
cisco / ios 12.1yd 12.1yd.x
cisco / ios 12.1ye 12.1ye.x
cisco / ios 12.1yf 12.1yf.x
cisco / ios 12.1yi 12.1yi.x
cisco / ios 12.2 12.2.x
cisco / ios 12.2b 12.2b.x
cisco / ios 12.2bc 12.2bc.x
cisco / ios 12.2da 12.2da.x
cisco / ios 12.2dd 12.2dd.x
cisco / ios 12.2s 12.2s.x
cisco / ios 12.2t 12.2t.x
cisco / ios 12.2xa 12.2xa.x
cisco / ios 12.2xb 12.2xb.x
cisco / ios 12.2xd 12.2xd.x
cisco / ios 12.2xe 12.2xe.x
cisco / ios 12.2xf 12.2xf.x
cisco / ios 12.2xg 12.2xg.x
cisco / ios 12.2xh 12.2xh.x
cisco / ios 12.2xi 12.2xi.x
cisco / ios 12.2xj 12.2xj.x
cisco / ios 12.2xk 12.2xk.x
cisco / ios 12.2xl 12.2xl.x
cisco / ios 12.2xm 12.2xm.x
cisco / ios 12.2xn 12.2xn.x
cisco / ios 12.2xq 12.2xq.x
cisco / ios 12.2xr 12.2xr.x
cisco / ios 12.2xs 12.2xs.x
cisco / ios 12.2xt 12.2xt.x
cisco / ios 12.2xw 12.2xw.x
cisco / ios 12.2ya 12.2ya.x
cisco / ios 12.2yb 12.2yb.x
cisco / ios 12.2yc 12.2yc.x
cisco / ios 12.2yd 12.2yd.x
cisco / ios 12.2yf 12.2yf.x
cisco / ios 12.2yg 12.2yg.x
cisco / ios 12.2yh 12.2yh.x
cisco / pix_firewall_software 5.2 5.2.x
cisco / pix_firewall_software 5.3 5.3.x
cisco / pix_firewall_software 6.0 6.0.x
cisco / pix_firewall_software 6.1 6.1.x
cisco / pix_firewall_software 6.2 6.2.x
cisco / css11000_content_services_switch - -
cisco / catos 6.1(2.13) 6.1(2.13).x
cisco / catos 5.4(4) 5.4(4).x
cisco / catos 5.5(4) 5.5(4).x
cisco / catos 5.5(13) 5.5(13).x
cisco / catos 7.1(2) 7.1(2).x
cisco / catos 6.2(0.110) 6.2(0.110).x
cisco / catos 6.2(0.111) 6.2(0.111).x
cisco / catos 5.4(1) 5.4(1).x
cisco / catos 5.5 5.5.x
cisco / catos 6.1(1) 6.1(1).x
cisco / catos 5.5(1) 5.5(1).x
cisco / catos 6.1(1b) 6.1(1b).x
cisco / catos 6.1(1a) 6.1(1a).x
cisco / catos 5.5(4b) 5.5(4b).x
cisco / catos 5.3(5)csx 5.3(5)csx.x
cisco / catos 5.3(1a)csx 5.3(1a)csx.x
cisco / catos 5.3(2)csx 5.3(2)csx.x
cisco / catos 7.1 7.1.x
cisco / catos 5.3(4)csx 5.3(4)csx.x
cisco / catos 5.5(4a) 5.5(4a).x
cisco / catos 5.4(3) 5.4(3).x
cisco / catos 6.3(4) 6.3(4).x
cisco / catos 5.5(3) 5.5(3).x
cisco / catos 5.3(3)csx 5.3(3)csx.x
cisco / catos 5.4 5.4.x
cisco / catos 5.3(6)csx 5.3(6)csx.x
cisco / catos 5.4(2) 5.4(2).x
cisco / catos 6.3(0.7)pan 6.3(0.7)pan.x
cisco / catos 5.5(2) 5.5(2).x
cisco / catos 5.3(5a)csx 5.3(5a)csx.x
cisco / catos 5.3(1)csx 5.3(1)csx.x
cisco / catos 6.1(1c) 6.1(1c).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.