{"id":"CVE-2026-109242","title":"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","summary":"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…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","cwe":["CWE-908"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP < 3.0.0","FreeRDP >= 3.6.0 < 3.32.0"],"published":"2026-10-12","updated":"2026-10-15","sourceUpdated":"2026-10-15T03:17:07.077","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109242","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4mpr-hmqx-83q8","label":"disclosure@vulncheck.com"},{"url":"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","label":"disclosure@vulncheck.com"},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4mpr-hmqx-83q8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00295,"epssPercentile":0.22016,"ingestedAt":"2026-10-12T18:00:08.173Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T02:27:47.243992Z"},"slug":"CVE-2026-109242","body":"## Overview\n\nFreeRDP 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":222054,"id":"CVE-2026-109242","ts":1792043631390,"field":"exploit_available","old":"false","new":"true"}]}