CVE-2026-114045GHSA-3m9q-g533-rqjq
FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format
FreeRDP FreeRDP
CVSS
8.7HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.48%Chance of exploitation activity in the next 30 days, higher than 40% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.32.1FreeRDPCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
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 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.
Text from CVE List
Affected versions 2
- FreeRDPaffected: all versions before 3.32.1CVE List
- FreeRDPunaffected: 3.32.1CVE List