Remote Desktop Protocol Implementation Vulnerability in FreeRDP
CVE-2026-33952

6MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
30 March 2026

What is CVE-2026-33952?

FreeRDP, a widely used free implementation of the Remote Desktop Protocol, is affected by a vulnerability prior to version 3.24.2. An unvalidated auth_length field processed from the network can trigger an assertion failure in the function rts_read_auth_verifier_no_checks(). This vulnerability allows a malicious RDP Gateway to crash any FreeRDP client using RPC-over-HTTP transport, leading to a pre-authentication denial of service. This issue has been addressed in the release of version 3.24.2.

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Affected Version(s)

FreeRDP < 3.24.2

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/commit/4ac0b6467d371a1...
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CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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