CVE-2026-44420High· 8.8▾ TwilightFreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a t…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.7 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
3.5%
3.5% → 3.7%
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.
freerdp < 3.26.0Upgrade past the affected range:
freerdp 3.26.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-44421High· 8.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-40033High· 8.8FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bounds heap memory
CVE-2026-23534Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-23533Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-23532Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-23531Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol