All vulnerabilities
CVE-2026-111881GHSA-27m7-gwhh-6hhf

FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard

FreeRDP FreeRDP
Open in ThreatlineRecord JSON
CVSS
7.2High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.32.0Fixed versionCVE List
Published17 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • FreeRDPaffected: 3.14.1 before 3.32.0CVE List
  • FreeRDPunaffected: 3.32.0CVE List

References 2