FKIE_CVE-2006-2369
Vulnerability from fkie_nvd - Published: 2006-05-15 16:06 - Updated: 2026-06-16 22:24
Severity
Summary
RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:vnc:realvnc:4.1.1:*:*:*:*:*:*:*",
"matchCriteriaId": "992E24CA-43E0-411D-9DB9-F9567868E2A4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password."
},
{
"lang": "es",
"value": "RealVNC 4.1.1 y otros productos que usan RealVNC tales como AdderLink IP y Cisco CallManager, permite a atacantes remotos eludir autenticaci\u00f3n a trav\u00e9s de una petici\u00f3n en la que el cliente especifica un tipo de seguridad insegura como \"Type 1 - None\", que es aceptada incluso si no es ofrecida por el servidor, como se demuestra originalmente usando una contrase\u00f1a larga."
}
],
"id": "CVE-2006-2369",
"lastModified": "2026-06-16T22:24:52.227",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": true,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2006-05-15T16:06:00.000",
"references": [
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{
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"url": "http://marc.info/?l=vnc-list\u0026m=114755444130188\u0026w=2"
},
{
"source": "secalert@redhat.com",
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},
{
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"tags": [
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"url": "http://secunia.com/advisories/20107"
},
{
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{
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{
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},
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{
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"url": "http://www.cisco.com/warp/public/707/cisco-sr-20060622-cmm.shtml"
},
{
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"url": "http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html"
},
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],
"url": "http://www.kb.cert.org/vuls/id/117929"
},
{
"source": "secalert@redhat.com",
"url": "http://www.osvdb.org/25479"
},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "http://www.realvnc.com/products/free/4.1/release-notes.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/archive/1/433994/100/0/threaded"
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"url": "http://www.securityfocus.com/archive/1/434015/100/0/threaded"
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"url": "http://www.securityfocus.com/archive/1/434518/100/0/threaded"
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"url": "http://www.securityfocus.com/archive/1/434560/100/0/threaded"
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{
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"url": "http://www.securityfocus.com/archive/1/438175/100/0/threaded"
},
{
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"url": "http://www.securityfocus.com/archive/1/438368/100/0/threaded"
},
{
"source": "secalert@redhat.com",
"tags": [
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{
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},
{
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"url": "http://www.vupen.com/english/advisories/2006/2492"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/26445"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://marc.info/?l=full-disclosure\u0026m=114768344111131\u0026w=2"
},
{
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"url": "http://marc.info/?l=vnc-list\u0026m=114755444130188\u0026w=2"
},
{
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],
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],
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{
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],
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"url": "http://www.cisco.com/warp/public/707/cisco-sr-20060622-cmm.shtml"
},
{
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"url": "http://www.openwall.com/lists/oss-security/2024/08/02/8"
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"url": "http://www.securityfocus.com/archive/1/434015/100/0/threaded"
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{
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{
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{
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/26445"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vendorComments": [
{
"comment": "This issue only affected version 4.1.1 and not the versions distributed with Red Hat Enterprise Linux 2.1, 3, or 4.",
"lastModified": "2006-08-16T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
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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.
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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.
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