Heap-based Buffer Overflow Affecting freerdp-libs package, versions <2:2.11.7-7.el9_8.6


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.46% (38th percentile)

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  • Snyk IDSNYK-ORACLE9-FREERDPLIBS-19500791
  • published2 Sept 2026
  • disclosed19 Aug 2026

Introduced: 19 Aug 2026

NewCVE-2026-55194  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Oracle:9 freerdp-libs to version 2:2.11.7-7.el9_8.6 or higher.
This issue was patched in ELSA-2026-61379-0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-libs package and not the freerdp-libs package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, rpc_client_recv_fragment in libfreerdp/core/gateway/rpc_client.c ensures the response reassembly stream capacity using only the server-declared alloc_hint rather than the actual StubLength about to be written. A malicious TS Gateway can send a PTYPE_RESPONSE with a small alloc_hint and a much larger frag_length, causing Stream_Write to copy attacker-controlled stub data beyond the 4096-byte pdu->s buffer. This can crash the client and may permit code execution through heap corruption. This issue is fixed in version 3.27.0.

CVSS Base Scores

version 3.1