CVE-2026-114045CWE-122

CVE-2026-114045

High · published October 21, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
40.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00484 · 40.7th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-10-21T05:17Z
References (2)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3m9q-g533-rqjq · [email protected]https://www.vulncheck.com/advisories/freerdp-before-3.32.1-heap-buffer-overflow-via-rdpsnd-server-select-format · [email protected]
EPSS history
Timeline
  • 22 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 21 OCT 00:36Z
    FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format
    cvelistv5
  • 21 OCT 00:36Z
    FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format
    cvelistv5