CVE-2026-63652

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/commit/caf653c0ba1c75ec8f298d1baa59770102a5d14c
https://github.com/FreeRDP/FreeRDP/pull/12993
https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9g22-w2gr-vcmp
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9g22-w2gr-vcmp

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 18:17

Updated : 2026-09-09 21:19

NVD link : CVE-2026-63652

Mitre link : CVE-2026-63652

CVE.ORG link : CVE-2026-63652

JSON object : View

Products Affected

No product.

CWE

CWE-415

Double Free

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