FreeRDP 3.10.0 through 3.32.2 contains a heap buffer overflow in the WinPR png_write_data callback that writes past the buffer after a realloc failure. A malicious RDP clipboard peer can supply a large CF_DIB image that triggers out-of-bounds memcpy during PNG conversion, causing a client crash.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sun, 18 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 14 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 12 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Description FreeRDP 3.10.0 through 3.32.2 contains a heap buffer overflow in the WinPR png_write_data callback that writes past the buffer after a realloc failure. A malicious RDP clipboard peer can supply a large CF_DIB image that triggers out-of-bounds memcpy during PNG conversion, causing a client crash.
Title FreeRDP 3.10.0 through 3.32.2 Heap Buffer Overflow in WinPR PNG Conversion
First Time appeared Freerdp
Freerdp freerdp
Weaknesses CWE-122
CPEs cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Vendors & Products Freerdp
Freerdp freerdp
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-18T11:38:15.143Z

Reserved: 2026-10-12T14:09:00.053Z

Link: CVE-2026-109256

cve-icon Vulnrichment

Updated: 2026-10-18T11:38:10.822Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-10-12T17:17:17.137

Modified: 2026-10-18T12:17:03.220

Link: CVE-2026-109256

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-12T16:04:27Z

Links: CVE-2026-109256 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T07:45:05Z

Weaknesses