{"id":"CVE-2026-55827","aliases":["ALPINE-CVE-2026-55827","ALSA-2026:50747","DEBIAN-CVE-2026-55827","EUVD-2026-43004","GHSA-c495-h83v-3prp","RHSA-2026:50747","RHSA-2026:54667","RLSA-2026:50747","UBUNTU-CVE-2026-55827","USN-8561-1","openSUSE-SU-2026:11065-1"],"status":"published","title":"FreeRDP: Heap out-of-bounds write in RemoteFX (RFX) Cache Bitmap V3 decode","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00533,"percentile":0.45352,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-131","CWE-787"],"published":"2026-06-19T00:00:00Z","modified":"2026-11-03T06:32:58Z","fixes":[{"ecosystem":"Alpine:v3.24","package":"freerdp","fixed_in":["3.27.1-r0"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"freerdp","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"freerdp-devel","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"freerdp-libs","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"freerdp-server","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"libwinpr","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"libwinpr-devel","fixed_in":["2:3.10.3-12.el10_2.7"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"freerdp3","fixed_in":["3.27.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Red 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Advisory","advisory","article","report"]},{"url":"https://github.com/FreeRDP/FreeRDP/pull/12899","tags":["x_refsource_MISC","Patch","fix","article"]},{"url":"https://github.com/FreeRDP/FreeRDP/commit/e58adf922ea4c0d5495e59a1fe488d70092e0e3e","tags":["x_refsource_MISC","Patch","fix","article"]},{"url":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.1","tags":["x_refsource_MISC","Release Notes","web","article"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-55827","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50747","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-55827","tags":["report"]},{"url":"https://bugzilla.redhat.com/2499159","tags":["report"]},{"url":"https://errata.almalinux.org/10/ALSA-2026-50747.html","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55827.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55827","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-55827","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2499159","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_50747.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-55827","tags":["advisory","report"]},{"url":"https://access.redhat.com/errata/RHSA-2026:54667","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54667.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:50747","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-55827","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8561-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-27951","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-29774","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-29775","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-29776","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-31806","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-31883","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-31884","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-31885","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-31897","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33952","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33977","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33982","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33983","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33984","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33985","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33986","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33987","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-33995","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-40033","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-40254","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-44420","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-44421","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-44422","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55191","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55192","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55193","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55194","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55564","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-55648","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-56297","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-57156","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-57157","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-57158","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55191","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55192","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55193","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55194","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55648","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55827","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-55827","title":"FreeRDP: Heap out-of-bounds write in RemoteFX (RFX) Cache Bitmap V3 decode","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T19:47:03.498Z","modified":"2026-07-15T03:58:59.199Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-131","CWE-787"],"updated_at":"2026-11-02T14:20:11.925815Z"}],"euvd":[{"id":"EUVD-2026-43004","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T19:47:03Z","modified":"2026-07-15T03:58:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:19:53.678292Z"}],"nvd":[{"id":"CVE-2026-55827","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T20:16:48.06Z","modified":"2026-07-15T05:17:15.187Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-131","CWE-787"],"updated_at":"2026-11-02T14:12:28.771746Z"}],"osv":[{"id":"ALPINE-CVE-2026-55827","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T20:16:48.06Z","modified":"2026-11-03T06:32:58.084726816Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T07:16:09.603409Z"},{"id":"CVE-2026-55827","title":"FreeRDP: Heap out-of-bounds write in RemoteFX (RFX) Cache Bitmap V3 decode","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T19:47:03.498Z","modified":"2026-10-28T02:30:54.568336597Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-131","CWE-787"],"updated_at":"2026-11-02T15:45:11.609219Z"},{"id":"DEBIAN-CVE-2026-55827","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T20:16:48.06Z","modified":"2026-10-01T03:03:26.813995452Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"RHSA-2026:50747","title":"Red Hat Security Advisory: freerdp security update","status":"published","published":"2026-08-06T10:13:59Z","modified":"2026-08-14T10:15:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:20.984762Z"},{"id":"RHSA-2026:54667","title":"Red Hat Security Advisory: freerdp security update","status":"published","published":"2026-08-14T10:17:07Z","modified":"2026-08-14T10:33:06.253377153Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.457353Z"},{"id":"RLSA-2026:50747","title":"Important: freerdp security update","description":"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.\n\nSecurity Fix(es):\n\n* FreeRDP: FreeRDP: Remote code execution via heap out-of-bounds write in RemoteFX decoding (CVE-2026-55827)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-08-06T00:07:16.929494Z","modified":"2026-08-06T00:30:07.891648858Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.111232Z"},{"id":"UBUNTU-CVE-2026-55827","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap-\u003edata only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.","status":"published","published":"2026-07-10T20:16:00Z","modified":"2026-07-21T13:10:19.576781329Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"},{"id":"ALSA-2026:50747","title":"Important: freerdp security update","description":"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.  \n\nSecurity Fix(es):  \n\n  * FreeRDP: FreeRDP: Remote code execution via heap out-of-bounds write in RemoteFX decoding (CVE-2026-55827)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-08-05T00:00:00Z","modified":"2026-10-29T11:30:36.923255581Z","updated_at":"2026-11-02T15:27:54.753319Z"},{"id":"openSUSE-SU-2026:11065-1","title":"freerdp-3.27.1-1.1 on GA media","description":"These are all security issues fixed in the freerdp-3.27.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-19T00:00:00Z","modified":"2026-06-20T08:45:09.315995726Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"USN-8561-1","title":"freerdp3 vulnerabilities","description":"It was discovered that FreeRDP contained multiple security issues. An\nattacker could possibly use these issues to obtain sensitive information,\ncause FreeRDP to crash, resulting in a denial of service, or execute\narbitrary code.","status":"published","published":"2026-07-20T11:49:26Z","modified":"2026-10-01T00:17:47.242027428Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}