CVE-2026-57156
Critical
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.
SeverityCritical
CVSS9.8
Exploit probability—
ProductFreerdp
PublishedJul 10, 2026
First seenJul 10, 2026
Weakness typeCWE-122CWE-122CWE-190Integer overflow
How to fix
Update
- freerdp freerdp3.28.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freerdp freerdp | v < 3.28.0 | 3.28.0 |
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