CVE-2026-109242

HIGHCVSS 7.1

Description

FreeRDP before 3.0.0 and 3.6.0 before 3.32.0 renders uninitialized heap memory from un-decoded progressive tiles because the tile->current buffer is allocated without zeroing. A malicious RDP server can send a crafted WBT_TILE_FIRST then WBT_TILE_UPGRADE sequence to paint heap bytes onscreen or abort the client process.

Timeline

Published:October 12th, 2026 5:17 PM

Last modified:October 15th, 2026 3:17 AM

CVSS Scoring

CVSS v3: 7.1 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Weaknesses (CWE)

CWE-908

References & Reports

Advisories, patches, and third-party reports

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4mpr-hmqx-83q8
https://www.vulncheck.com/advisories/freerdp-before-3.0.0-and-3.6.0-before-3.32.0-uninitialized-heap-disclosure-via-progressive-codec-tile-upgrade
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4mpr-hmqx-83q8

Source: NIST NVD · Data may lag official sources by up to one minute