{"apiVersion":"1.0","identifier":"CVE-2026-55193","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.","publishedAt":"2026-08-19T18:16:44","lastModifiedAt":"2026-08-27T17:18:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55193","cvssScore":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00489,"riskScore":0.91,"affectedProduct":"FreeRDP","affectedVersions":"<3.27.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-55193","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-55193","en":"https://www.redsauce.net/en/cves/CVE-2026-55193","fr":"https://www.redsauce.net/fr/cves/CVE-2026-55193","pt":"https://www.redsauce.net/pt/cves/CVE-2026-55193","de":"https://www.redsauce.net/de/cves/CVE-2026-55193","sk":"https://www.redsauce.net/sk/cves/CVE-2026-55193","el":"https://www.redsauce.net/el/cves/CVE-2026-55193"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-55193"}}