CVE-2026-57156 PUBLISHED

FreeRDP: Integer overflow leading to heap buffer overflow in Orders Delta Points parsing

Assigner: GitHub_M
Reserved: 24.06.2026 Published: 10.07.2026 Updated: 10.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.6

Product Status

Vendor FreeRDP
Product FreeRDP
Versions
  • Version < 3.28.0 is affected

References

Problem Types

  • CWE-122: Heap-based Buffer Overflow CWE
  • CWE-190: Integer Overflow or Wraparound CWE