Integer overflow in FreeRDP - #VU146597
Published: September 1, 2026
Vulnerability identifier: #VU146597
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service and potentially corrupt memory.
The vulnerability exists due to integer overflow or wraparound in the audin Apple backends when processing server-controlled audio format values during audin negotiation. A remote attacker can send a crafted MSG_SNDIN_OPEN message with a malicious FramesPerPacket value to cause a denial of service and potentially corrupt memory.
The issue affects the macOS and iOS audin backends, and on macOS the wrapped allocation size can become 4 bytes while AudioQueueAllocateBuffer() still succeeds.
Affected software
FreeRDP
Remediation
Install security update from vendor's website.
FreeRDP - update to 3.31.0