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CVE-2026-23884

CRITICAL

9.8

Descricao

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves `gdi->drawing` pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

Detalhes CVE

Pontuacao CVSS v3.19.8

SeveridadeCRITICAL

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado1/19/2026

Ultima modificacao1/28/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

freerdp:freerdp

Fraquezas (CWE)

CWE-416

Referencias

https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L114-L122(security-advisories@github.com)

https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L87-L91(security-advisories@github.com)

https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0(security-advisories@github.com)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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