CVE-2009-2055 (GCVE-0-2009-2055)
Vulnerability from cvelistv5 – Published: 2009-08-19 17:00 – Updated: 2026-01-12 20:39Summary
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
Severity
5.9 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 17:41 UTC
CWE
- n/a
- CWE-20 - Improper Input Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| http://mailman.nanog.org/pipermail/nanog/2009-Aug… | mailing-listx_refsource_MLIST |
| http://securitytracker.com/id?1022739 | vdb-entryx_refsource_SECTRACK |
| http://www.cisco.com/en/US/products/products_secu… | vendor-advisoryx_refsource_CISCO |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 13d51342-21a5-483d-8527-1abf0201fd60
Exploited: Yes
Timestamps
First Seen: 2022-03-25
Asserted: 2022-03-25
Scope
Notes: KEV entry: Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability | Affected: Cisco / IOS XR | Description: Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS). | Required action: Apply updates per vendor instructions. | Due date: 2022-04-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2009-2055
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | IOS XR |
| Due Date | 2022-04-15 |
| Date Added | 2022-03-25 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 59bbdf72-7934-499f-8ce5-f32c76a41804
Exploited: Yes
Timestamps
First Seen: 2022-03-25
Asserted: 2022-03-25
Scope
Notes: KEVIntel entry: Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid... | Affected: Cisco / IOS XR | 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 XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid... |
| Vendor | Cisco |
| Product | IOS XR |
| Added Date | 2022-03-25T00:00:00.000Z |
| 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 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-07T05:36:20.975Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK",
"x_transferred"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO",
"x_transferred"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
],
"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-2009-2055",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-08T17:41:43.520580Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-03-25",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-12T20:39:47.917Z",
"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-2009-2055"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2009-08-19T17:00:00.000Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2009-2055",
"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 XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"refsource": "MLIST",
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"refsource": "SECTRACK",
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"refsource": "CISCO",
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2009-2055",
"datePublished": "2009-08-19T17:00:00.000Z",
"dateReserved": "2009-06-12T00:00:00.000Z",
"dateUpdated": "2026-01-12T20:39:47.917Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2009-2055",
"cwes": [
"CWE-20"
],
"dateAdded": "2022-03-25",
"dueDate": "2022-04-15",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2009-2055",
"product": "IOS XR",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability"
},
"epss": {
"cve": "CVE-2009-2055",
"date": "2026-09-26",
"epss": "0.03314",
"percentile": "0.88122"
},
"fkie_nvd": {
"cisaActionDue": "2022-04-15",
"cisaExploitAdd": "2022-03-25",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4:*:*:*:*:*:*:*",
"matchCriteriaId": "75538529-611A-43B5-AC4D-089C4E2E2ACC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "00DA2581-F618-4F2A-AB65-DA23DF51AF89",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.1:*:*:*:*:*:*:*",
"matchCriteriaId": "81797938-F953-42BE-B287-AA48B9860AF6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.2:*:*:*:*:*:*:*",
"matchCriteriaId": "92AED038-C73F-4499-B064-F01D80DB0C64",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.3:*:*:*:*:*:*:*",
"matchCriteriaId": "CB7A249B-AF69-47D0-B6DE-968B4CD0BA42",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5:*:*:*:*:*:*:*",
"matchCriteriaId": "F992D03D-1DB8-44C1-B59D-1C09A32A2C91",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.2:*:*:*:*:*:*:*",
"matchCriteriaId": "C5F15240-6323-4766-801A-D887F3EA8A6B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.3:*:*:*:*:*:*:*",
"matchCriteriaId": "D99DC1CF-78DC-4E59-98BA-DD84702D6467",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.4:*:*:*:*:*:*:*",
"matchCriteriaId": "0B9FA754-E3D2-4D80-8F4B-41139973D9FC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.0:*:*:*:*:*:*:*",
"matchCriteriaId": "F497A05C-2FC5-427D-8036-2476ACA956C0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.1:*:*:*:*:*:*:*",
"matchCriteriaId": "2252E7B0-9112-4E9E-8CF4-4EC53C630CFD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.2:*:*:*:*:*:*:*",
"matchCriteriaId": "1131A524-AA7A-4C94-9FFE-54546EA7D2CC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.3:*:*:*:*:*:*:*",
"matchCriteriaId": "46D1A634-D39C-4305-8915-4AA289FB68EE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "21BAB799-3150-46D8-AEA3-9FCC73203221",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.1:*:*:*:*:*:*:*",
"matchCriteriaId": "99042285-94AC-4C57-8EAA-EE63C678A94A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.2:*:*:*:*:*:*:*",
"matchCriteriaId": "2E752AA9-CC1C-44B6-A916-A3C76A57F05C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.3:*:*:*:*:*:*:*",
"matchCriteriaId": "71CBE50E-9BD3-4F74-8C7A-BE4905090EE2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "96F48419-AF66-4B50-ACBF-9E38287A64FA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.8.1:*:*:*:*:*:*:*",
"matchCriteriaId": "EBB71A24-AA6C-4BAD-BD37-5C191751C9DF",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
},
{
"lang": "es",
"value": "Cisco IOS XR desde la v3.4.0 hasta la v3.8.1 permite a atacantes remotos producir una denegaci\u00f3n de servicio (reset de sesi\u00f3n) a trav\u00e9s de el mensaje BGP UPDATE con un atributo invalido, como se demostr\u00f3 el 17 de Agosto de 2009."
}
],
"id": "CVE-2009-2055",
"lastModified": "2025-01-06T19:08:16.263",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-08-19T17:30:01.047",
"references": [
{
"source": "ykramarz@cisco.com",
"tags": [
"Mailing List"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"source": "ykramarz@cisco.com",
"tags": [
"Broken Link"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"source": "ykramarz@cisco.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
],
"sourceIdentifier": "ykramarz@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"cisaActionDue": "2022-04-15",
"cisaExploitAdd": "2022-03-25",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4:*:*:*:*:*:*:*",
"matchCriteriaId": "75538529-611A-43B5-AC4D-089C4E2E2ACC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "00DA2581-F618-4F2A-AB65-DA23DF51AF89",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.1:*:*:*:*:*:*:*",
"matchCriteriaId": "81797938-F953-42BE-B287-AA48B9860AF6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.2:*:*:*:*:*:*:*",
"matchCriteriaId": "92AED038-C73F-4499-B064-F01D80DB0C64",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.4.3:*:*:*:*:*:*:*",
"matchCriteriaId": "CB7A249B-AF69-47D0-B6DE-968B4CD0BA42",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5:*:*:*:*:*:*:*",
"matchCriteriaId": "F992D03D-1DB8-44C1-B59D-1C09A32A2C91",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.2:*:*:*:*:*:*:*",
"matchCriteriaId": "C5F15240-6323-4766-801A-D887F3EA8A6B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.3:*:*:*:*:*:*:*",
"matchCriteriaId": "D99DC1CF-78DC-4E59-98BA-DD84702D6467",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.5.4:*:*:*:*:*:*:*",
"matchCriteriaId": "0B9FA754-E3D2-4D80-8F4B-41139973D9FC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.0:*:*:*:*:*:*:*",
"matchCriteriaId": "F497A05C-2FC5-427D-8036-2476ACA956C0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.1:*:*:*:*:*:*:*",
"matchCriteriaId": "2252E7B0-9112-4E9E-8CF4-4EC53C630CFD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.2:*:*:*:*:*:*:*",
"matchCriteriaId": "1131A524-AA7A-4C94-9FFE-54546EA7D2CC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.6.3:*:*:*:*:*:*:*",
"matchCriteriaId": "46D1A634-D39C-4305-8915-4AA289FB68EE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "21BAB799-3150-46D8-AEA3-9FCC73203221",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.1:*:*:*:*:*:*:*",
"matchCriteriaId": "99042285-94AC-4C57-8EAA-EE63C678A94A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.2:*:*:*:*:*:*:*",
"matchCriteriaId": "2E752AA9-CC1C-44B6-A916-A3C76A57F05C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.7.3:*:*:*:*:*:*:*",
"matchCriteriaId": "71CBE50E-9BD3-4F74-8C7A-BE4905090EE2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "96F48419-AF66-4B50-ACBF-9E38287A64FA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:3.8.1:*:*:*:*:*:*:*",
"matchCriteriaId": "EBB71A24-AA6C-4BAD-BD37-5C191751C9DF",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
},
{
"lang": "es",
"value": "Cisco IOS XR desde la v3.4.0 hasta la v3.8.1 permite a atacantes remotos producir una denegaci\u00f3n de servicio (reset de sesi\u00f3n) a trav\u00e9s de el mensaje BGP UPDATE con un atributo invalido, como se demostr\u00f3 el 17 de Agosto de 2009."
}
],
"id": "CVE-2009-2055",
"lastModified": "2026-04-22T15:40:28.900",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"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"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2009-08-19T17:30:01.047",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Mailing List"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"source": "psirt@cisco.com",
"tags": [
"Broken Link"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"source": "psirt@cisco.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-07T05:36:20.975Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK",
"x_transferred"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO",
"x_transferred"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
],
"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-2009-2055",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-08T17:41:43.520580Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-03-25",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-11-08T16:07:26.055Z",
"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-2009-2055"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2009-08-19T17:00:00.000Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK"
],
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2009-2055",
"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 XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "[nanog] 20090817 RE: Anyone else seeing \"(invalid or corrupt AS path) 3 bytes E01100\" ?",
"refsource": "MLIST",
"url": "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html"
},
{
"name": "1022739",
"refsource": "SECTRACK",
"url": "http://securitytracker.com/id?1022739"
},
{
"name": "20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerability",
"refsource": "CISCO",
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2009-2055",
"datePublished": "2009-08-19T17:00:00.000Z",
"dateReserved": "2009-06-12T00:00:00.000Z",
"dateUpdated": "2026-01-12T20:39:47.917Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…