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CVE-2026-91964

Medium priority

Some fixes available 2 of 8

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can...

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-2026-91963

Medium priority

Some fixes available 2 of 8

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from 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-2026-91962

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 contains an integer overflow in the audin Apple backends when processing FramesPerPacket values from MSG_SNDIN_OPEN messages. Attackers can supply crafted FramesPerPacket values that...

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-2026-91961

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a...

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-2026-91960

Medium priority

Some fixes available 2 of 8

FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame...

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-2026-91959

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 contains a buffer over-read vulnerability in the rts_read_result function within the RPC gateway transport parser. Attackers can send a malicious BIND_ACK PDU with a truncated result entry to trigger an...

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-2026-91958

Medium priority

Some fixes available 2 of 8

FreeRDP versions before 3.31.0 fail to validate MonitorIds array values when parsing RDP connection files, allowing unbounded array indexing in xf_detect_monitors. Attackers can craft a malicious RDP file with an out-of-range...

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-2026-91957

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration. Attackers can trigger thread creation failure during channel setup to...

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-2026-91956

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can...

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-2026-91955

Medium priority

Some fixes available 2 of 8

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized...

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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