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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-22856",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-01-12T16:20:16.746Z",
"datePublished": "2026-01-14T17:53:04.756Z",
"dateUpdated": "2026-02-26T15:04:09.196Z"
},
"containers": {
"cna": {
"title": "FreeRDP has a heap-use-after-free in create_irp_thread",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"lang": "en",
"description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-416",
"lang": "en",
"description": "CWE-416: Use After Free",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv"
},
{
"name": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1"
}
],
"affected": [
{
"vendor": "FreeRDP",
"product": "FreeRDP",
"versions": [
{
"version": "< 3.20.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-01-14T17:53:04.756Z"
},
"descriptions": [
{
"lang": "en",
"value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1."
}
],
"source": {
"advisory": "GHSA-w842-c386-fxhv",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-22856",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-01-16T04:55:50.344558Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-02-26T15:04:09.196Z"
}
}
]
}
}