CVE-2004-1464 (GCVE-0-2004-1464)

Vulnerability from cvelistv5 – Published: 2005-02-13 05:00 – Updated: 2025-10-22 00:05
VLAI CISA KEVIntel
Summary
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
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • n/a
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
URL Tags
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://securitytracker.com/id?1011079 vdb-entryx_refsource_SECTRACK
http://www.kb.cert.org/vuls/id/384230 third-party-advisoryx_refsource_CERT-VN
http://secunia.com/advisories/12395/ third-party-advisoryx_refsource_SECUNIA
http://www.cisco.com/warp/public/707/cisco-sa-200… vendor-advisoryx_refsource_CISCO
http://www.securityfocus.com/bid/11060 vdb-entryx_refsource_BID
https://www.cisa.gov/known-exploited-vulnerabilit… government-resource
Date Public
2004-08-27 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c43ede6a-18e0-4423-88fc-7688d6ed502c

Vulnerability ID: CVE-2004-1464

Status: Confirmed

Status Updated: 2023-05-19 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-05-19
Asserted: 2023-05-19
Scope
Notes: KEV entry: Cisco IOS Denial-of-Service Vulnerability | Affected: Cisco / IOS | Description: 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. | Required action: Apply updates per vendor instructions. | Due date: 2023-06-09 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20040827-telnet; https://nvd.nist.gov/vuln/detail/CVE-2004-1464
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes
Feed CISA Known Exploited Vulnerabilities Catalog
Product IOS
Due Date 2023-06-09
Date Added 2023-05-19
Vendorproject Cisco
Vulnerabilityname Cisco IOS Denial-of-Service Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-02-06 07:53 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f9288559-afa6-4fa4-afbf-640aa1002ab2

Vulnerability ID: CVE-2004-1464

Status: Confirmed

Status Updated: 2023-05-19 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-05-19
Asserted: 2023-05-19
Scope
Notes: KEVIntel entry: 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... | Affected: Cisco / IOS | CVSS: 5.9 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor Cisco
Product IOS
Added Date 2023-05-19T00:00:00.000Z
Cvss Score 5.9
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:14 UTC | Updated: 2026-06-23 11:14 UTC
Show details on NVD website
To clipboard 

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    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.