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CVE-2026-121398

Medium priority

Some fixes available 3 of 9

FreeRDP before 3.32.2 contains a cross-thread use-after-free vulnerability in the freerdp-proxy dyn-channel-dump module during session teardown. A malicious RDP target can send dynamic channel data while the front...

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-2026-121397

Medium priority

Some fixes available 3 of 9

FreeRDP before 3.32.2 contains a heap buffer over-read vulnerability in save_png_to_buffer() that allows malicious RDP servers to leak client memory by sending 16 bpp DIB clipboard data. Attackers can offer a CF_DIB BI_BITFIELDS...

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-2026-121396

Medium priority

Some fixes available 3 of 9

FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_read_auth_verifier triggered by malformed RTS padding. Attackers controlling an RD Gateway can send a crafted...

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-2026-121395

Medium priority

Some fixes available 3 of 9

FreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX differential decoder when verbose WinPR assertions are enabled. A malicious RDP server can send a crafted RemoteFX tile with adjacent LL3 coefficients...

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-2026-121394

Medium priority

Some fixes available 3 of 9

FreeRDP from 3.11.0 before 3.32.2 contains an assertion failure in the RemoteFX RLGR decoder that allows malicious servers to terminate clients. Attackers controlling an RDP server can send a RemoteFX tileset with RLGR code 32767,...

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-2026-121393

Medium priority

Some fixes available 3 of 9

FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply...

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-2026-121392

Medium priority

Some fixes available 3 of 9

FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings....

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-2026-121391

Medium priority

Some fixes available 3 of 9

FreeRDP from 3.0.0 before 3.32.2 contains a file descriptor leak in parallel_process_irp_create that fails to close previous descriptors on repeated IRP_MJ_CREATE requests. A hostile RDP server with parallel-device redirection...

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-2026-121390

Medium priority

Some fixes available 3 of 9

FreeRDP 3.0.0 before 3.32.2 built with WITH_AAD=ON contains a reachable assertion because its ARM gateway response parser accepts a missing or non-string redirectedServerCert field and passes a null buffer to the certificate...

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-2026-121389

Medium priority

Some fixes available 3 of 9

FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in rdpdr_dump_packet that allows malicious RDP servers to abort clients by sending malformed RDPDR device-list announcements. Attackers can declare 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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