CVE-2004-1464

CVE-2004-1464 is a medium-severity (CVSS 5.9) vulnerability in Cisco IOS. CISA added it to the Known Exploited Vulnerabilities catalog on May 19, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 9, 2023. CISA does not currently list it as used in ransomware campaigns. Cisco has 102 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.

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.

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

• http://secunia.com/advisories/12395/
• http://securitytracker.com/id?1011079
• http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml
• http://www.kb.cert.org/vuls/id/384230
• http://www.securityfocus.com/bid/11060
• https://exchange.xforce.ibmcloud.com/vulnerabilities/17131
• http://secunia.com/advisories/12395/
• http://securitytracker.com/id?1011079