Exploitation evidence
Known exploited · CISA KEV listed
Added 2023-05-19. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2023-06-09. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
n/a / n/a
Default status: Not specified
- affected: n/a
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17131
- http://securitytracker.com/id?1011079
- http://www.kb.cert.org/vuls/id/384230
- http://secunia.com/advisories/12395/
- http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml
- http://www.securityfocus.com/bid/11060
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.04801,
"percentile": 0.92072
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.0484,
"percentile": 0.9208
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.0484,
"percentile": 0.9207
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.0484,
"percentile": 0.92066
}08 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-08T00:53:23.947Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "cisco-ios-telnet-dos(17131)",
"tags": [
"vdb-entry",
"x_refsource_XF",
"x_transferred"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17131"
},
{
"name": "1011079",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK",
"x_transferred"
],
"url": "http://securitytracker.com/id?1011079"
},
{
"name": "VU#384230",
"tags": [
"third-party-advisory",
"x_refsource_CERT-VN",
"x_transferred"
],
"url": "http://www.kb.cert.org/vuls/id/384230"
},
{
"name": "12395",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA",
"x_transferred"
],
"url": "http://secunia.com/advisories/12395/"
},
{
"name": "20040827 Cisco Telnet Denial of Service Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO",
"x_transferred"
],
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml"
},
{
"name": "11060",
"tags": [
"vdb-entry",
"x_refsource_BID",
"x_transferred"
],
"url": "http://www.securityfocus.com/bid/11060"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2004-1464",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-07T14:29:07.632839Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-05-19",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400 Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-22T00:05:57.162Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-05-19T00:00:00.000Z",
"value": "CVE-2004-1464 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"datePublic": "2004-08-27T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2017-07-10T14:57:01.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"name": "cisco-ios-telnet-dos(17131)",
"tags": [
"vdb-entry",
"x_refsource_XF"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17131"
},
{
"name": "1011079",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK"
],
"url": "http://securitytracker.com/id?1011079"
},
{
"name": "VU#384230",
"tags": [
"third-party-advisory",
"x_refsource_CERT-VN"
],
"url": "http://www.kb.cert.org/vuls/id/384230"
},
{
"name": "12395",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA"
],
"url": "http://secunia.com/advisories/12395/"
},
{
"name": "20040827 Cisco Telnet Denial of Service Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO"
],
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml"
},
{
"name": "11060",
"tags": [
"vdb-entry",
"x_refsource_BID"
],
"url": "http://www.securityfocus.com/bid/11060"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2004-1464",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "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."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "cisco-ios-telnet-dos(17131)",
"refsource": "XF",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17131"
},
{
"name": "1011079",
"refsource": "SECTRACK",
"url": "http://securitytracker.com/id?1011079"
},
{
"name": "VU#384230",
"refsource": "CERT-VN",
"url": "http://www.kb.cert.org/vuls/id/384230"
},
{
"name": "12395",
"refsource": "SECUNIA",
"url": "http://secunia.com/advisories/12395/"
},
{
"name": "20040827 Cisco Telnet Denial of Service Vulnerability",
"refsource": "CISCO",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml"
},
{
"name": "11060",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/11060"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2004-1464",
"datePublished": "2005-02-13T05:00:00.000Z",
"dateReserved": "2005-02-13T00:00:00.000Z",
"dateUpdated": "2025-10-22T00:05:57.162Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.0484,
"percentile": 0.9206
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.0484,
"percentile": 0.92047
}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.0484,
"percentile": 0.92039
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.0484,
"percentile": 0.92033
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.0484,
"percentile": 0.92018
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.0484,
"percentile": 0.92007
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2004-1464",
"cwes": [],
"dateAdded": "2023-05-19",
"dueDate": "2023-06-09",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20040827-telnet; https://nvd.nist.gov/vuln/detail/CVE-2004-1464",
"product": "IOS",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "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.",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco IOS Denial-of-Service Vulnerability"
}