CVE-2026-33516 (GCVE-0-2026-33516)
Vulnerability from cvelistv5 – Published: 2026-04-17 19:56 – Updated: 2026-04-17 19:56
VLAI?
Title
xrdp: Pre-authentication out-of-bounds reads in RDP capability and channel parsers
Summary
xrdp is an open source RDP server. Versions through 0.10.5 contain an out-of-bounds read vulnerability during the RDP capability exchange phase. The issue occurs when memory is accessed before validating the remaining buffer length. A remote, unauthenticated attacker can trigger this vulnerability by sending a specially crafted Confirm Active PDU. Successful exploitation could lead to a denial of service (process crash) or potential disclosure of sensitive information from the process memory. This issue has been fixed in version 0.10.6.
Severity ?
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| neutrinolabs | xrdp |
Affected:
< 0.10.6
|
{
"containers": {
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"affected": [
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"product": "xrdp",
"vendor": "neutrinolabs",
"versions": [
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"status": "affected",
"version": "\u003c 0.10.6"
}
]
}
],
"descriptions": [
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}
],
"metrics": [
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"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
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"descriptions": [
{
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"description": "CWE-125: Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-17T19:56:11.990Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-rvh9-9wm3-28c7",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-rvh9-9wm3-28c7"
},
{
"name": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6"
}
],
"source": {
"advisory": "GHSA-rvh9-9wm3-28c7",
"discovery": "UNKNOWN"
},
"title": "xrdp: Pre-authentication out-of-bounds reads in RDP capability and channel parsers"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"cveId": "CVE-2026-33516",
"datePublished": "2026-04-17T19:56:11.990Z",
"dateReserved": "2026-03-20T16:59:08.891Z",
"dateUpdated": "2026-04-17T19:56:11.990Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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