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Double Free Affecting freerdp2 package, versions *

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.34% (28th percentile)

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  • Snyk IDSNYK-DEBIAN12-FREERDP2-19012901
  • published20 Aug 2026
  • disclosed19 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 19 Aug 2026

NewCVE-2026-63652  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 freerdp2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp2 package and not the freerdp2 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, rdpsnd_server_recv_formats in channels/rdpsnd/server/rdpsnd_main.c frees context->client_formats on a malformed Client Audio Formats PDU without clearing the owning pointer or num_client_formats. An authenticated RDP client can trigger an error such as a cbSize larger than the remaining record, leave the dangling pointer in the server context, and cause rdpsnd_server_context_free to free the same allocation again at session teardown. This reliably terminates the server and can create allocator-dependent heap corruption. This issue is fixed in version 3.28.0.