---
id: CVE-2026-67297
title: >-
  FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing
  Transfer-Encoding: chunked HTTP responses in http_response_recv_body()
summary: >-
  FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing
  Transfer-Encoding: chunked HTTP responses in http_response_recv_body().
  Attackers controlling a malicious RD Gateway endpoint can send oversized
  chunked respo…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: freerdp
product: freerdp
affected:
  - freerdp < 3.29.0
patched:
  - freerdp 3.29.0
published: '2026-08-01'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:04:27.790'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67297'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2c6r-4pr4-9x8m'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-resource-exhaustion-via-chunked-http-response
    label: disclosure@vulncheck.com
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2c6r-4pr4-9x8m'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-67297.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-67297'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2509986'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-67297'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67297'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68706'
  - url: 'https://access.redhat.com/errata/RHSA-2026:61378'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00521
epssPercentile: 0.41805
ingestedAt: '2026-08-02T05:17:49.635Z'
scores:
  nvd: 7.5
  vendor: 6.5
---

## Overview

FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing Transfer-Encoding: chunked HTTP responses in http_response_recv_body(). Attackers controlling a malicious RD Gateway endpoint can send oversized chunked response bodies to exhaust client memory resources without triggering the configured size limit.

## Affected

- `freerdp < 3.29.0`

## Remediation

Upgrade past the affected range:

- `freerdp 3.29.0`

## Vendor advisories

- **RHSA-2026:68706** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68706)
- **RHSA-2026:61378** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61378)