CVE-2024-22211: FreeRDP integer Overflow leading to Heap Overflow

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-01-19 · updated 2026-06-17
Weakness: CWE-122

Description

FreeRDP is a set of free and open source remote desktop protocol library and clients. In affected versions an integer overflow in `freerdp_bitmap_planar_context_reset` leads to heap-buffer overflow. This affects FreeRDP based clients. FreeRDP based server implementations and proxy are not affected. A malicious server could prepare a `RDPGFX_RESET_GRAPHICS_PDU` to allocate too small buffers, possibly triggering later out of bound read/write. Data extraction over network is not possible, the buffers are used to display an image. This issue has been addressed in version 2.11.5 and 3.2.0. Users are advised to upgrade. there are no know workarounds for this vulnerability.

Affected products

FreeRDP: before 2.11.5; from 3.0.0 before 3.2.0 — fixed in 2.11.5, 3.2.0

How to fix

Upgrade to a fixed version: FreeRDP 2.11.5, 3.2.0. Check the vendor advisory for mitigations.

References

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