Incorrect Calculation of Buffer Size Affecting freerdp-server package, versions <2:3.10.3-12.el10_2.7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-ORACLE10-FREERDPSERVER-18571334
  • published6 Aug 2026
  • disclosed10 Jul 2026

Introduced: 10 Jul 2026

CVE-2026-55827  (opens in a new tab)
CWE-131  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:10 freerdp-server to version 2:3.10.3-12.el10_2.7 or higher.
This issue was patched in ELSA-2026-50747.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-server package and not the freerdp-server package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap->data only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.

CVSS Base Scores

version 3.1