CVE-2026-55564

CVE-2026-55564 is an out-of-bounds heap read in FreeRDP (a free RDP client implementation) affecting versions prior to 3.27.0 . The root cause is in glyph_cache_get() in libfreerdp/cache/glyph.c, which uses > instead of >= when bounds-checking the index against cache->number. A malicious...

CVE-2026-55564 FreeRDP: Out-of-bounds read in glyph_cache_get via crafted glyph fragments

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyphcacheget function in libfreerdp/cache/glyph.c checks whether index is greater than cache-number instead of greater than or equal to it. A malicious RDP server can use GLYPHFRAGMENTUSE replay in...

EUVD-2026-62662

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyphcacheget function in libfreerdp/cache/glyph.c checks whether index is greater than cache-number instead of greater than or equal to it. A malicious RDP server can use GLYPHFRAGMENTUSE replay in...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

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 in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191

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 in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

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 in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

EUVD-2026-62660

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 in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191

FreeRDP clients prior to 3.27.0 are vulnerable to a heap-buffer-overflow write in the RDPGFX AVC444 codec path. In libfreerdp/codec/h264.c, the function avc444_ensure_buffer() computes the intermediate YUV444 buffer size using 32-bit multiplication (piDstStride[x] * padDstHeight). A malicious RDP...

Amazon Linux 2023 : freerdp, freerdp-devel, freerdp-libs (ALAS2023-2026-2053)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2053 advisory. FreeRDP before 3.28.0 affected outlength, so out-of-bounds bytes are written before the bounds check. On the server side, when a client selects RDP Standard Security, the encrypted client rand...

freerdp security update

An update is available for freerdp. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list FreeRDP is a free implementation of the Remote Desktop Protocol RDP, released...

RHSA-2026:54486 Red Hat Security Advisory: freerdp security update

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freerdp security update

An update is available for freerdp. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list FreeRDP is a free implementation of the Remote Desktop Protocol RDP, released...

RockyLinux 9 : freerdp (RLSA-2026:54487)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54487 advisory. FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files CVE-2026-64624 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async messa...

Oracle Linux 9 : freerdp (ELSA-2026-54487)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-54487 advisory. 2:2.11.7-7.5 - Backport several CVE fixes CVE-2026-64624, CVE-2026-67289, CVE-2026-67299, CVE-2026-68580 Resolves: RHEL-213169, RHEL-222785,...

MiracleLinux 8 : freerdp-2.11.7-11.el8_10 (AXSA:2026-1534:25)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1534:25 advisory. FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files CVE-2026-64624 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async...

AlmaLinux 9 : freerdp (ALSA-2026:54487)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:54487 advisory. FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files CVE-2026-64624 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async messag...

RockyLinux 8 : freerdp (RLSA-2026:54485)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54485 advisory. FreeRDP: FreeRDP: Arbitrary code execution via malicious RDP files CVE-2026-64624 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async messa...

AlmaLinux 10 : freerdp (ALSA-2026:54486)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:54486 advisory. FreeRDP: FreeRDP: Remote code execution or denial of service via heap-based buffer overflow CVE-2026-64620 FreeRDP: FreeRDP: Double-free vulnerability v...

Important: Red Hat Security Advisory: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

FreeRDP: FreeRDP: Remote code execution via heap out-of-bounds write in RemoteFX decoding

A flaw was found in FreeRDP. FreeRDP clients using the non-default /cache:codec:rfx option are vulnerable to a heap out-of-bounds write. A malicious Remote Desktop Protocol RDP server can exploit this by manipulating desktop stride and height values during RemoteFX decoding for Cache Bitmap V3...