{"id":"CVE-2026-55648","summary":"FreeRDP: Integer Overflow in `freerdp_image_copy_from_icon_data` Bypasses Bounds Check","details":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, freerdp_image_copy_from_icon_data in libfreerdp/codec/color.c calculates nWidth multiplied by nHeight multiplied by FreeRDPGetBytesPerPixel(format) in 32-bit arithmetic. A malicious RDP server can send a RAIL TS_ICON_INFO update with dimensions such as 32768 by 32768 and 32 bits per pixel so the required-size calculation wraps, bypassing the cbBitsColor source bounds check before freerdp_image_copy_no_overlap reads attacker-controlled icon data. This affects RemoteApp clients using the vulnerable library path, while xfreerdp has a caller-side mitigation. This issue is fixed in version 3.27.0.","aliases":["GHSA-5c5v-f78v-h2f6"],"modified":"2026-08-23T10:47:14.755805Z","published":"2026-08-19T17:48:51.223Z","related":["openSUSE-SU-2026:11065-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-190"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55648.json"},"references":[{"type":"WEB","url":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55648.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5c5v-f78v-h2f6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55648"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/commit/e4ae473da2926724d9b6329778797a3bdea79eb3"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/pull/12877"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"0"},{"fixed":"e4ae473da2926724d9b6329778797a3bdea79eb3"},{"fixed":"4f72b0979892352ff501e84d99832dc3bdc86a53"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.27.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["3.5.1","3.5.0","3.4.0","3.3.0","3.2.0","3.1.0","3.0.0","3.0.0-rc0","3.0.0-beta4","3.0.0-beta3","3.0.0-beta2","3.0.0-beta1","2.0.0","2.0.0-rc4","2.0.0-rc3","2.0.0-rc2","2.0.0-rc1","2.0.0-rc0","2.0.0-beta1+android11","2.0.0-beta1+android10","1.2.0-beta1+android9","1.2.0-beta1+android7","1.1.0-beta+2013071101","1.1.0-beta1+ios4","1.1.0-beta1+android5","1.1.0-beta1+android4","1.1.0-beta1+ios3","1.1.0-beta1+ios2","1.1.0-beta1+android3","1.1.0-beta1+android2","1.1.0-beta1+ios1","1.1.0-beta1","1.0.1","1.0.0","1.0-beta5","1.0-beta4","1.0-beta2","1.0-beta1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55648.json","vanir_signatures_modified":"2026-08-23T10:47:14Z","vanir_signatures":[{"signature_version":"v1","source":"https://github.com/freerdp/freerdp/commit/e4ae473da2926724d9b6329778797a3bdea79eb3","target":{"file":"libfreerdp/codec/color.c"},"deprecated":false,"digest":{"line_hashes":["230402938174537687929010848484726732497","264242194155059264099533705329771710625","266419247608246964626282559096566264359","200216550651134513472369100182932634107"],"threshold":0.9},"id":"CVE-2026-55648-5661f764","signature_type":"Line"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N"}]}