CVE-2026-57156

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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823	Patch
https://github.com/FreeRDP/FreeRDP/pull/12938	Issue Tracking Patch
https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0	Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7	Exploit Mitigation Vendor Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-10 20:16

Updated : 2026-07-15 05:17

NVD link : CVE-2026-57156

Mitre link : CVE-2026-57156

CVE.ORG link : CVE-2026-57156

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-122

Heap-based Buffer Overflow

CWE-190

Integer Overflow or Wraparound

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