# CVE-2004-1464: Cisco IOS Denial-of-Service Vulnerability

> CVE-2004-1464: Cisco IOS Denial-of-Service Vulnerability. CVSS 5.9 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2004-1464
Last updated: 2025-10-22T00:05:57Z

- Published: 2005-02-13 05:00 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: mitre
- CVSS: 5.9 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 4.8%, 92th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-05-19, federal due date 2023-06-09, ransomware use: Unknown

## Description

Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Cisco: IOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2004-1464)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2004-1464)
- [http://secunia.com/advisories/12395/](http://secunia.com/advisories/12395/)
- [http://securitytracker.com/id?1011079](http://securitytracker.com/id?1011079)
- [https://exchange.xforce.ibmcloud.com/vulnerabilities/17131](https://exchange.xforce.ibmcloud.com/vulnerabilities/17131)
- [http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml](http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml)
- [http://www.kb.cert.org/vuls/id/384230](http://www.kb.cert.org/vuls/id/384230)
- [http://www.securityfocus.com/bid/11060](http://www.securityfocus.com/bid/11060)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2004-1464 · Markdown: https://rewindex.com/cve/CVE-2004-1464.md · JSON: https://rewindex.com/api/v1/cves/CVE-2004-1464 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:15.531Z