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5.5
FreeRDP Remote Desktop Protocol Buffer Overread Vulnerability
CVE-2026-26271
Summary
A security issue affects older versions of FreeRDP. A malicious RDP server can send data that causes FreeRDP to access memory incorrectly, potentially leading to security problems. Update to version 3.23.0 or later to resolve the issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| freerdp | freerdp | <= 3.23.0 | – |
Original title
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by c...
Original description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by crafted RDP Window Icon (TS_ICON_INFO) data. The bug is reachable over the network when a client processes icon data from an RDP server (or from a man-in-the-middle). Version 3.23.0 fixes the issue.
nvd CVSS3.1
5.3
nvd CVSS4.0
5.5
Vulnerability type
CWE-126
Published: 25 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026