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FreeRDP CVE-2026-67297

| EUVDEUVD-2026-51856 HIGH
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-08-01 VulnCheck GHSA-43rq-pv9m-43rf
Denial Of Service Freerdp Suse Red Hat
8.7
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.7 HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.5 HIGH

Attacker controls the network endpoint (gateway server), so AV:N and PR:N apply; impact is pure availability loss with no confidentiality or integrity breach.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Aug 01, 2026 - 13:11 vuln.today
Patch available
Aug 01, 2026 - 13:01 EUVD
CVE Published
Aug 01, 2026 - 12:22 cve.org
HIGH 8.7

DescriptionCVE.org

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.

AnalysisAI

Memory exhaustion in FreeRDP before 3.29.0 allows unauthenticated attackers controlling a malicious RD Gateway endpoint to crash the client by sending Transfer-Encoding: chunked HTTP response bodies of unbounded size. The http_response_recv_body() function fails to enforce the configured RESPONSE_SIZE_LIMIT exclusively for chunked responses, creating an exploitable gap in the intended safety boundary. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Vulnerability AssessmentAI

Exploitation The attacker must control or successfully impersonate the RD Gateway HTTPS endpoint that the FreeRDP client is configured to connect to - this is the binding prerequisite. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VA:H) scores 8.7, indicating a network-reachable, zero-complexity denial-of-service with no prerequisites on the client side. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade FreeRDP to version 3.29.0 or later, which enforces RESPONSE_SIZE_LIMIT for chunked HTTP responses. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, audit your environment to identify all systems and users running FreeRDP versions before 3.29.0; coordinate with IT infrastructure teams managing RD Gateways. …

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Not-Affected
SUSE Linux Enterprise Server 15 SP7 Affected

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CVE-2026-67297 vulnerability details – vuln.today
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