Reachable Assertion Affecting freerdp package, versions <3.24.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALPINE323-FREERDP-15805126
  • published29 Mar 2026
  • disclosed30 Mar 2026

Introduced: 29 Mar 2026

NewCVE-2026-33952  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 freerdp to version 3.24.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp package and not the freerdp package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, an unvalidated auth_length field read from the network triggers a WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks(), causing any FreeRDP client connecting through a malicious RDP Gateway to crash with SIGABRT. This is a pre-authentication denial of service affecting all FreeRDP clients using RPC-over-HTTP gateway transport. The assertion is active in default release builds (WITH_VERBOSE_WINPR_ASSERT=ON). This issue has been patched in version 3.24.2.

CVSS Base Scores

version 3.1