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ALSA-2026:61378 — Important: freerdp security update

Affected: AlmaLinux:10: freerdp, AlmaLinux:10: freerdp-devel, AlmaLinux:10: freerdp-libs, AlmaLinux:10: freerdp-server, AlmaLinux:10: libwinpr, AlmaLinux:10: libwinpr-devel

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

* FreeRDP: FreeRDP: Resource exhaustion due to oversized chunked HTTP responses (CVE-2026-67297) * FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders (CVE-2026-67301) * FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests (CVE-2026-67288) * FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read (CVE-2026-67291) * FreeRDP: FreeRDP: Denial of Service due to RDPEI message processing (CVE-2026-67296) * FreeRDP: FreeRDP: Denial of Service via null pointer dereference in smartcard cleanup (CVE-2026-67304) * FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling (CVE-2026-67298) * FreeRDP: FreeRDP: Out-of-bounds memory access in Kerberos decryption (CVE-2026-73242) * FreeRDP: FreeRDP: Authentication bypass via incorrect RDSTLS PDU handling (CVE-2026-73241) * FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU (CVE-2026-63652) * FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response (CVE-2026-55194) * freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in Opus audio decode (CVE-2026-63633) * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of s…

EUVD-2026-343940

fkie_cve-2026-67288

FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard cache request decoders that accept NULL NDR pointers for LookupName in SCARD_IOCTL_READCACHEA and SCARD_IOCTL_WRITECACHEA operations. When smartcard emulation is enabled, attackers can send crafted smartcard cache requests with NULL lookup-name pointers to trigger strlen() on a null pointer, causing client process termination.

GHSA-hq8h-rvcv-jvh4

OESA-2026-3853 — freerdp security update

Affected: openEuler:24.03-LTS-SP4: freerdp

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft&apos;s open specifications. This package provides the client applications xfreerdp. Security Fix(es):

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.20.1, a global-buffer-overflow vulnerability was observed in FreeRDP's Base64 decoding path. The root cause is the implementation-defined signedness of the `char` type: on Arm/AArch64 builds, plain `char` is treated as unsigned, causing the guard condition `c <= 0` to potentially be optimized by the compiler into a simple `c != 0` check. Consequently, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, resulting in out-of-bounds access. A malicious server can exploit this to trigger a client-side crash, leading to a denial of service.(CVE-2026-22858)

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 libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This…

RHSA-2026:61378 — Red Hat Security Advisory: freerdp security update

FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in Opus audio decode FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read FreeRDP: FreeRDP: Denial of Service due to RDPEI message processing FreeRDP: FreeRDP: Resource exhaustion due to oversized chunked HTTP responses FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders FreeRDP: FreeRDP: Denial of Service via null pointer dereference in smartcard cleanup FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service and information disclosure FreeRDP: FreeRDP: Authentication bypass via incorrect RDSTLS PDU handling FreeRDP: FreeRDP: Out-of-bounds memory access in Kerberos decryption

RHSA-2026:65855 — Red Hat Security Advisory: freerdp security update

FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders

RLSA-2026:61378 — Important: freerdp security update

Affected: Rocky Linux:10: freerdp

Security Fix(es):

* FreeRDP: FreeRDP: Resource exhaustion due to oversized chunked HTTP responses (CVE-2026-67297)

* FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders (CVE-2026-67301)

* FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests (CVE-2026-67288)

* FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read (CVE-2026-67291)

* FreeRDP: FreeRDP: Denial of Service due to RDPEI message processing (CVE-2026-67296)

* FreeRDP: FreeRDP: Denial of Service via null pointer dereference in smartcard cleanup (CVE-2026-67304)

* FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling (CVE-2026-67298)

* FreeRDP: FreeRDP: Out-of-bounds memory access in Kerberos decryption (CVE-2026-73242)

* FreeRDP: FreeRDP: Authentication bypass via incorrect RDSTLS PDU handling (CVE-2026-73241)

* FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU (CVE-2026-63652)

* FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response (CVE-2026-55194)

* freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in Opus audio decode (CVE-2026-63633)

* FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service and informa…

UBUNTU-CVE-2026-67288

Affected: Ubuntu:16.04:LTS: freerdp, Ubuntu:Pro:18.04:LTS: freerdp2, Ubuntu:18.04:LTS: freerdp, Ubuntu:Pro:20.04:LTS: freerdp2, Ubuntu:22.04:LTS: freerdp2, Ubuntu:24.04:LTS: freerdp3, Ubuntu:Pro:24.04:LTS: freerdp2, Ubuntu:26.04:LTS: freerdp3

WID-SEC-W-2026-2384 — FreeRDP: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.