Integer Overflow or Wraparound Affecting freerdp3 package, versions <3.27.0+dfsg-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-DEBIAN14-FREERDP3-17882045
  • published8 Jul 2026
  • disclosed19 Aug 2026

Introduced: 8 Jul 2026

CVE-2026-55648  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Debian:14 freerdp3 to version 3.27.0+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp3 package and not the freerdp3 package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, freerdp_image_copy_from_icon_data in libfreerdp/codec/color.c calculates nWidth multiplied by nHeight multiplied by FreeRDPGetBytesPerPixel(format) in 32-bit arithmetic. A malicious RDP server can send a RAIL TS_ICON_INFO update with dimensions such as 32768 by 32768 and 32 bits per pixel so the required-size calculation wraps, bypassing the cbBitsColor source bounds check before freerdp_image_copy_no_overlap reads attacker-controlled icon data. This affects RemoteApp clients using the vulnerable library path, while xfreerdp has a caller-side mitigation. This issue is fixed in version 3.27.0.

CVSS Base Scores

version 3.1