Vulnerability details

CVE-2026-67296

FreeRDP FreeRDP

FreeRDP before 3.29.0 Denial of Service via RDPEI PDU

CVSS 4.0

8.7High

Official description

FreeRDP before 3.29.0 contains a denial of service vulnerability in the RDPEI server channel handler that fails to validate maximum PDU body length before stream allocation. A malicious RDP client can send a header-only RDPEI message with a large declared body length to force excessive memory allocation on the server.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`
7.5High	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Affected products

Vendor	Product	Versions	Source
FreeRDP	FreeRDP	v < 3.29.0	CVEProject cvelistV5 (CNA)

References and advisories

https://www.vulncheck.com/advisories/freerdp-before-denial-of-service-via-rdpei-pdu third-party-advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jm8r-22j6-4m4v vendor-advisory

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Details

Published: 2026-08-01
Last updated: 2026-08-03
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.52%

Probability of exploitation in 30 days

44.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Partial

Weaknesses (CWE)

CWE-20
Improper Input Validation