How severe is CVE-2004-1464?

CVE-2004-1464 has a CVSS 3.1 base score of 5.9 (MEDIUM). EPSS estimates a 4.8% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

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

CISA Known Exploited Vulnerabilities

Cisco IOS Denial-of-Service Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-05-19

Remediation due

2023-06-09

Required action
Apply updates per vendor instructions.

CISA notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20040827-telnet; https://nvd.nist.gov/vuln/detail/CVE-2004-1464

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.

Severity

CVSS 3.1 · CISA5.9 MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

6 Links

Vendor advisories

20040827 Cisco Telnet Denial of Service Vulnerability

Third-party advisories

Vulnerability databases

Record Details

Published

2005-02-13

Last updated

2025-10-22

Assigner (CNA)

mitre

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.