Out-of-Bounds Read Vulnerability in FreeRDP Remote Desktop Implementation
CVE-2026-25942

5.5MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
25 February 2026

What is CVE-2026-25942?

The FreeRDP implementation of the Remote Desktop Protocol contains a vulnerability due to unsafe indexing of an array with user-provided input. Specifically, before version 3.23.0, the function xf_rail_server_execute_result does not properly validate the execResult value received from the server, which can result in an out-of-bounds read if the server sends an execResult value of 7 or higher. This flaw can potentially allow an attacker to read sensitive information from unintended memory locations. Version 3.23.0 addresses this issue by implementing necessary checks on the execResult value.

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Affected Version(s)

FreeRDP < 3.23.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/commit/9362a0bf8dda04e...
x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb6...
x_refsource_MISC

CVSS V4

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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