{"id":"CVE-2026-114045","title":"FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format","summary":"FreeRDP before 3.32.1 contains a heap-based buffer overflow in the server-side rdpsnd channel because an integer wraparound in rdpsnd_server_select_format() DVI_ADPCM block-alignment arithmetic bypasses validation. A malicious RDP client…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP < 3.32.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-21T14:39:55.345448Z"},"published":"2026-10-21","updated":"2026-10-21","sourceUpdated":"2026-10-21T15:51:03.137Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114045","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3m9q-g533-rqjq","label":"GitHub Security Advisory (GHSA-3m9q-g533-rqjq)"},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.1-heap-buffer-overflow-via-rdpsnd-server-select-format","label":"VulnCheck Advisory: FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114045.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-114045"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2557974"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-114045"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114045"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00576,"epssPercentile":0.47285,"ingestedAt":"2026-10-21T01:37:08.045Z","slug":"CVE-2026-114045","body":"## Overview\n\nFreeRDP before 3.32.1 contains a heap-based buffer overflow in the server-side rdpsnd channel because an integer wraparound in rdpsnd_server_select_format() DVI_ADPCM block-alignment arithmetic bypasses validation. A malicious RDP client can send two SNDC_FORMATS PDUs with an nBlockAlign too small for nChannels, causing an unbounded heap write during server audio playback, potentially enabling code execution.\n\n## Affected\n\n- `FreeRDP < 3.32.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114045.json)","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}