CVE-2026-57156

CRITICAL9.8

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

Published Jul 10, 2026

Modified 3 months ago

Details

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.

References

WEB

https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823

WEB

https://github.com/FreeRDP/FreeRDP/pull/12938

WEB

https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0

WEB

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-57156

CVSS Analysis