SB2026101949 - Out-of-bounds read in FreeRDP

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Main Vulnerability Database SB2026101949

SB2026101949 - Out-of-bounds read in FreeRDP

Published: October 19, 2026

Security Bulletin ID SB2026101949
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: N/A)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service by crashing the FreeRDP client.

The vulnerability exists due to an out-of-bounds read in freerdp_dsp_decode_gsm610 when decoding truncated GSM610/WAV49 audio without checking that a complete 33-byte or 32-byte frame remains before calling gsm_decode. A remote attacker can operate a malicious RDP server that a victim connects to and send a length-consistent WAVE2 message containing an incomplete audio frame over the rdpsnd channel to cause the client to read beyond the audio buffer and potentially crash.

Exploitation requires a build configured with WITH_GSM=ON and WITH_DSP_FFMPEG=OFF.


Remediation

Install update from vendor's website.

References