Vulnerability in FreeRDP
FreeRDP before 3.32.1 contains a heap-based out-of-bounds read in WinPR's clipboard PNG-to-CF_DIB synthesis because winpr_read_png_from_buffer() allocates a bit-packed buffer for PNGs with bit depth below 8, while winpr_bitmap_write_buffer() copies rows assuming one byte per pixel. A malicious RDP server can send a crafted low-bit-depth PNG clipboard payload that, when pasted by the victim, discloses megabytes of heap memory.
- Products
- FreeRDP
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-114043
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 16:31 UTC · Revision 2
Source evidence
FreeRDP before 3.32.1 contains a heap-based out-of-bounds read in WinPR's clipboard PNG-to-CF_DIB synthesis because winpr_read_png_from_buffer() allocates a bit-packed buffer for PNGs with bit depth below 8, while winpr_bitmap_write_buffer() copies rows assuming one byte per pixel. A malicious RDP server can send a crafted low-bit-depth PNG clipboard payload that, when pasted by the victim, discloses megabytes of heap memory.
cve:CVE-2026-114043
FreeRDP
Fixed versions: Not specified
Complete source record
{
"id": "b71dad3f29a2f1d774f77dffa790614881c19f64c2ea72040858b6f4cfdcfa87",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-114043",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Vulnerability in FreeRDP",
"summary": "FreeRDP before 3.32.1 contains a heap-based out-of-bounds read in WinPR's clipboard PNG-to-CF_DIB synthesis because winpr_read_png_from_buffer() allocates a bit-packed buffer for PNGs with bit depth below 8, while winpr_bitmap_write_buffer() copies rows assuming one byte per pixel. A malicious RDP server can send a crafted low-bit-depth PNG clipboard payload that, when pasted by the victim, discloses megabytes of heap memory.",
"evidence": "cve:CVE-2026-114043",
"products": [
{
"name": {
"value": "FreeRDP",
"evidence": "/containers/cna/affected/0/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "CVE-2026-114043",
"aliases": [
"CVE-2026-114043"
],
"metrics": [
{
"format": "CVSS",
"cvssV4_0": {
"version": "4.0",
"baseScore": 7.1,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"userInteraction": "PASSIVE",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"subIntegrityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH"
}
},
{
"format": "CVSS",
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
}
}
],
"affected": [
{
"vendor": "FreeRDP",
"product": "FreeRDP",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "3.32.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.32.1",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"modified": "2026-10-27T21:39:05.944Z",
"provider": "cve",
"references": [
"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f3vg-h45x-6wgf",
"https://www.vulncheck.com/advisories/vulnerability-in-freerdp"
],
"provider_metadata": {
"adp": [
{
"title": "CISA ADP Vulnrichment",
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-114043",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-27T21:38:01.202507Z"
}
}
}
],
"references": [
{
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f3vg-h45x-6wgf",
"tags": [
"exploit"
]
}
],
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-27T21:39:05.944Z"
}
}
],
"cna": {
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck",
"dateUpdated": "2026-10-21T00:36:22.744Z"
}
}
},
"related_cves": [
{
"value": "CVE-2026-114043",
"evidence": "/cveMetadata/cveId"
}
],
"security_relevant": true,
"severity_evidence": "/containers/cna/metrics"
},
"source_id": "core-cve",
"document_id": 400596,
"published_at": "2026-10-21T00:36:22.744+00:00"
}