CVE-2004-1464

Cisco IOS: Denial-of-Service

As of , CVE-2004-1464 in Cisco IOS is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 19 May 2023
US federal deadline
9 June 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.05Higher than 91% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.02 on 19 May 2023EPSS on the day CISA listed it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: sec.cloudapps.cisco.comLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device.

CISA's 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.

The CVE record's description, from mitre

CVE published
13 February 2005
Assigned by
mitre
CVSS
5.9 Medium (CVSS 3.1, from CISA-ADP)
CWE-400
Uncontrolled Resource Consumption
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

IOS: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2008-4128Cross-Site Request ForgeryCisco IOSPatch nowForensic triage required by CISA; verified Exploit-DB entry0.34

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