---
id: CVE-2026-121397
title: FreeRDP before 3.32.2 Heap Over-Read via WinPR save_png_to_buffer()
summary: >-
  FreeRDP before 3.32.2 contains a heap buffer over-read vulnerability in
  save_png_to_buffer() that allows malicious RDP servers to leak client memory
  by sending 16 bpp DIB clipboard data. Attackers can offer a CF_DIB
  BI_BITFIELDS image th…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-125
vendor: FreeRDP
product: FreeRDP
affected:
  - FreeRDP < 3.32.2
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-03T16:06:14.108610Z'
exploitAvailable: true
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T16:06:40.356Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121397'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x7w3-32ch-x2jq'
    label: GitHub Security Advisory (GHSA-x7w3-32ch-x2jq)
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-3.32.2-heap-over-read-via-winpr-save-png-to-buffer
    label: >-
      VulnCheck Advisory: FreeRDP before 3.32.2 Heap Over-Read via WinPR
      save_png_to_buffer()
tags:
  - cve.org
  - exploit-available
epss: 0.0027
epssPercentile: 0.19297
ingestedAt: '2026-11-05T20:33:06.277Z'
---

## Overview

FreeRDP before 3.32.2 contains a heap buffer over-read vulnerability in save_png_to_buffer() that allows malicious RDP servers to leak client memory by sending 16 bpp DIB clipboard data. Attackers can offer a CF_DIB BI_BITFIELDS image that, when converted to PNG for a local application, embeds client heap bytes into the clipboard image.

## Affected

- `FreeRDP < 3.32.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.