CVE-2026-85090 (GCVE-0-2026-85090)
Vulnerability from cvelistv5 – Published: 2026-09-03 01:04 – Updated: 2026-09-03 01:04
VLAI
EPSS
VEX
Title
FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444
Summary
FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the general_ChromaV1ToYUV444 function during AVC444 chroma plane reconstruction. A malicious RDP server can craft a RFX_AVC444_BITMAP_STREAM with specific frame geometry to trigger an out-of-bounds memory read past the allocated luma plane.
Severity
5.4 (Medium)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/d0a481c… | patch |
| https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0 | release-notes |
| https://github.com/FreeRDP/FreeRDP/blob/3.30.0/li… | technical-description |
| https://github.com/FreeRDP/FreeRDP | product |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-13 00:00
{
"containers": {
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"affected": [
{
"defaultStatus": "unaffected",
"product": "FreeRDP",
"vendor": "FreeRDP",
"versions": [
{
"lessThan": "3.31.0",
"status": "affected",
"version": "3.0.0",
"versionType": "semver"
},
{
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"version": "3.31.0",
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}
]
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"negate": false,
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}
],
"metrics": [
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"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
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"userInteraction": "REQUIRED",
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"problemTypes": [
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"descriptions": [
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"description": "Out-of-bounds Read",
"lang": "en",
"type": "CWE"
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],
"providerMetadata": {
"dateUpdated": "2026-09-03T01:04:43.732Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-57h7-vw2f-2f9x)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9x"
},
{
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"url": "https://github.com/FreeRDP/FreeRDP/commit/d0a481cb74ab57bca24791fe11b89464a332d3f1"
},
{
"name": "FreeRDP 3.31.0 Release Notes",
"tags": [
"release-notes"
],
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.c"
},
{
"tags": [
"product"
],
"url": "https://github.com/FreeRDP/FreeRDP"
},
{
"name": "VulnCheck Advisory: FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-out-of-bounds-read-via-avc444"
}
],
"title": "FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444",
"x_generator": {
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}
}
},
"cveMetadata": {
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"cveId": "CVE-2026-85090",
"datePublished": "2026-09-03T01:04:43.732Z",
"dateReserved": "2026-09-02T23:53:01.335Z",
"dateUpdated": "2026-09-03T01:04:43.732Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-85090",
"date": "2026-09-04",
"epss": "0.00301",
"percentile": "0.22318"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-85090\",\"sourceIdentifier\":\"disclosure@vulncheck.com\",\"published\":\"2026-09-03T13:06:20.430\",\"lastModified\":\"2026-09-03T13:06:20.430\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the general_ChromaV1ToYUV444 function during AVC444 chroma plane reconstruction. A malicious RDP server can craft a RFX_AVC444_BITMAP_STREAM with specific frame geometry to trigger an out-of-bounds memory read past the allocated luma plane.\"}],\"affected\":[{\"source\":\"disclosure@vulncheck.com\",\"affectedData\":[{\"vendor\":\"FreeRDP\",\"product\":\"FreeRDP\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"3.0.0\",\"lessThan\":\"3.31.0\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.31.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"PASSIVE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"references\":[{\"url\":\"https://github.com/FreeRDP/FreeRDP\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.c\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/FreeRDP/FreeRDP/commit/d0a481cb74ab57bca24791fe11b89464a332d3f1\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9x\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-out-of-bounds-read-via-avc444\",\"source\":\"disclosure@vulncheck.com\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-03T12:23:41+00:00",
"cve": "CVE-2026-85090",
"id": "CVE-2026-85090",
"initial_release_date": "2026-09-03T01:04:43.732000+00:00",
"product_status:known_affected": "7",
"product_status:known_not_affected": "24",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "FreeRDP: FreeRDP: Heap Out-of-Bounds Read in AVC444 Chroma Combine",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85090.json",
"version": "3"
}
}
}
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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.
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.
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