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CVE-2026-55564

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyph_cache_get function in libfreerdp/cache/glyph.c checks whether index is greater than cache->number instead of greater than or equal to it....

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Fixed Fixed Not in release
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CVE-2026-55194

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, rpc_client_recv_fragment in libfreerdp/core/gateway/rpc_client.c ensures the response reassembly stream capacity using only the server-declared...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Fixed Fixed Not in release
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CVE-2026-55193

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Fixed Fixed Not in release
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CVE-2026-55192

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP H.264 decoder backends can return YUV planes sized from the bitstream without comparing the decoded width and height to the RDPGFX surface...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Fixed Fixed Not in release
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CVE-2026-55191

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Fixed Fixed Not in release
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CVE-2026-56297

Medium priority

Some fixes available 1 of 8

FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
freerdp3 Not affected Fixed Not in release
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CVE-2026-45700

Medium priority
Fixed

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In...

3 affected packages

freerdp, freerdp2, freerdp3

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp Not in release Not in release Not in release Not affected
freerdp2 Not in release Fixed Fixed Fixed Fixed
freerdp3 Fixed Fixed Not in release
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CVE-2026-44422

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed...

3 affected packages

freerdp3, freerdp, freerdp2

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp3 Fixed Fixed Not in release
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-44421

Medium priority

Some fixes available 2 of 9

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is...

3 affected packages

freerdp3, freerdp, freerdp2

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp3 Fixed Fixed Not in release
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-44420

Medium priority

Some fixes available 2 of 9

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...

3 affected packages

freerdp3, freerdp, freerdp2

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
freerdp3 Fixed Fixed Not in release
freerdp Not in release Not in release Not in release Needs evaluation
freerdp2 Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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