FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing Transfer-Encoding: chunked HTTP responses in http_response_recv_body(). (CVE-2026-67297)
FreeRDP versions prior to 3.29.0 contain a vulnerability where the RESPONSE_SIZE_LIMIT is not enforced when processing HTTP responses with Transfer-Encoding: chunked in the http_response_recv_body() function. This allows a malicious RD Gateway endpoint to send oversized chunked response bodies, potentially exhausting client memory resources. The vulnerability has a high severity rating with a CVSS score of 7.5 and impacts availability without affecting confidentiality or integrity.
AI Analysis
Technical Summary
The vulnerability in FreeRDP before version 3.29.0 involves improper enforcement of the RESPONSE_SIZE_LIMIT during the processing of chunked HTTP responses in the http_response_recv_body() function. An attacker controlling a malicious Remote Desktop Gateway (RD Gateway) can exploit this by sending oversized chunked response bodies, which can lead to exhaustion of client memory resources. This is classified under CWE-770 (Allocation of Resources Without Limits or Throttling). The CVSS 3.1 vector indicates the attack is network-based, requires no privileges or user interaction, and impacts availability only.
Potential Impact
Successful exploitation results in exhaustion of client memory resources, causing denial of service conditions on the FreeRDP client. There is no impact on confidentiality or integrity, but availability is significantly affected due to resource exhaustion.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid connecting to untrusted RD Gateway endpoints or implement network-level protections to limit exposure to malicious servers.
FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing Transfer-Encoding: chunked HTTP responses in http_response_recv_body(). (CVE-2026-67297)
Description
FreeRDP versions prior to 3.29.0 contain a vulnerability where the RESPONSE_SIZE_LIMIT is not enforced when processing HTTP responses with Transfer-Encoding: chunked in the http_response_recv_body() function. This allows a malicious RD Gateway endpoint to send oversized chunked response bodies, potentially exhausting client memory resources. The vulnerability has a high severity rating with a CVSS score of 7.5 and impacts availability without affecting confidentiality or integrity.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in FreeRDP before version 3.29.0 involves improper enforcement of the RESPONSE_SIZE_LIMIT during the processing of chunked HTTP responses in the http_response_recv_body() function. An attacker controlling a malicious Remote Desktop Gateway (RD Gateway) can exploit this by sending oversized chunked response bodies, which can lead to exhaustion of client memory resources. This is classified under CWE-770 (Allocation of Resources Without Limits or Throttling). The CVSS 3.1 vector indicates the attack is network-based, requires no privileges or user interaction, and impacts availability only.
Potential Impact
Successful exploitation results in exhaustion of client memory resources, causing denial of service conditions on the FreeRDP client. There is no impact on confidentiality or integrity, but availability is significantly affected due to resource exhaustion.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid connecting to untrusted RD Gateway endpoints or implement network-level protections to limit exposure to malicious servers.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-43rq-pv9m-43rf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-67297"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6e6298bf32cb7a344f9d0f
Added to database: 08/01/2026, 21:18:16 UTC
Last enriched: 08/01/2026, 21:23:55 UTC
Last updated: 08/02/2026, 01:36:28 UTC
Views: 4
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