Name: CVE-2026-114045: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2026-10-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-114045, CWE-122, CVSS 8.8, EPSS 0.00576

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.

CVSS Details

CVSS 4.0 Base Score: 8.7 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 8.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon_linux_2023	—	Upgrade freerdp-libsUpgrade freerdp-serverUpgrade libwinprUpgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfoUpgrade freerdp-debugsourceUpgrade freerdpUpgrade libwinpr-develUpgrade freerdp-libs-debuginfoUpgrade freerdp-debuginfoUpgrade freerdp-devel	Nov 2, 2026	Oct 21, 2026
Redhat_linux	—	No solution exists	Oct 22, 2026	Oct 21, 2026
Ubuntu	—	Upgrade freerdp3	Oct 28, 2026	Oct 23, 2026

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CVSS Details

Covered by Rapid7

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