CVE-2026-114042: FreeRDP 3.32.0 Use-After-Free via drdynvc Virtual Channel PDU

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-21 · updated 2026-10-22
Weakness: CWE-416

Description

FreeRDP 3.32.0 contains a use-after-free vulnerability in the drdynvc channel that frees a pool-owned stream with the owned-stream deallocator when totalLength is smaller than the chunk size. A malicious RDP server can send a single well-formed Virtual Channel PDU to trigger the free and crash the client during teardown.

Affected products

FreeRDP: from 3.32.0 before 3.32.1 — fixed in 3.32.1

How to fix

Upgrade to a fixed version: FreeRDP 3.32.1. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5xjc-c64q-m8r6
https://www.vulncheck.com/advisories/freerdp-3.32.0-use-after-free-via-drdynvc-virtual-channel-pdu
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5xjc-c64q-m8r6

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