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Vulnerability · Published Aug 1, 2026 · Assigned by VulnCheck

CVE-2026-67297FreeRDP before 3.29.0 Resource Exhaustion via chunked HTTP response

High 7.5

In plain English

A high-severity resource allocation without limits in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 55.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10freerdp2:3.10.3-12.el10_2.10ALSA-2026:61378
AlmaLinux:10freerdp-devel2:3.10.3-12.el10_2.10ALSA-2026:61378
AlmaLinux:10freerdp-libs2:3.10.3-12.el10_2.10ALSA-2026:61378
AlmaLinux:10freerdp-server2:3.10.3-12.el10_2.10ALSA-2026:61378
AlmaLinux:10libwinpr2:3.10.3-12.el10_2.10ALSA-2026:61378
AlmaLinux:10libwinpr-devel2:3.10.3-12.el10_2.10ALSA-2026:61378
Debian:12freerdp2no fix listedDEBIAN-CVE-2026-67297
Debian:13freerdp3no fix listedDEBIAN-CVE-2026-67297
Debian:14freerdp33.29.0+dfsg-1DEBIAN-CVE-2026-67297
Rocky Linux:10freerdp2:3.10.3-12.el10_2.10RLSA-2026:61378
Ubuntu:22.04:LTSfreerdp2no fix listedUBUNTU-CVE-2026-67297
Ubuntu:24.04:LTSfreerdp33.30.0+dfsg-0ubuntu0.24.04.1UBUNTU-CVE-2026-67297
Ubuntu:26.04:LTSfreerdp33.30.0+dfsg-0ubuntu0.26.04.1UBUNTU-CVE-2026-67297

Affected products (as reported)

VendorProductVersions
FreeRDP FreeRDP 0 – before 3.29.0

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References