Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.28.0 |
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f8Patch
- https://github.com/FreeRDP/FreeRDP/pull/12938Issue TrackingPatch
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7ExploitMitigationVendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-57156?
CVE-2026-57156 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 w...
How severe is CVE-2026-57156?
CVE-2026-57156 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-57156?
Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.