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CVE-2026-111881 Details

Description

FreeRDP from 3.14.1 before 3.32.0 contains an integer underflow in the WinPR BMP writer, where a mismatched stride calculation passes SIZE_MAX - 3 to Stream_Zero for sub-byte images. A malicious RDP clipboard peer can return a crafted 1-bpp BMP processed by clipboard_synthesize_image_format_to_bmp for CF_DIB/CF_DIBV5, crashing the client or causing an out-of-bounds write.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-27m7-gwhh-6hhf	CISA-ADP
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-27m7-gwhh-6hhf	[email protected]
https://www.vulncheck.com/advisories/freerdp-3.14.1-before-3.32.0-integer-underflow-in-bmp-writer-via-clipboard	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-191	Integer Underflow (Wrap or Wraparound)	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 19, 2026	CVE Modified	CISA-ADP
Oct 17, 2026	New CVE Received	[email protected]