{"affected":[{"defaultStatus":"unaffected","product":"FreeRDP","source":"CNA: VulnCheck","vendor":"FreeRDP","versions":[{"lessThan":"3.32.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.32.2","versionType":"semver"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*","versionEndExcluding":"3.32.2","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-121964","cwes":["CWE-122"],"description":"FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpc_client_recv_fragment writes BIND_ACK and ALTER_CONTEXT_RESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A malicious or compromised RD Gateway can send crafted RPC fragments with manipulated alloc_hint and frag_length values to overwrite client heap memory with attacker-controlled data, causing a crash or potentially arbitrary code execution.","epss":null,"exploits":[{"kind":"exploit","source":"disclosure@vulncheck.com","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q82v-5wjg-6h57"}],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","version":"4.0"},{"score":7.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793815300533,"publishedAt":1793806406687,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q82v-5wjg-6h57"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-heap-buffer-overflow-via-rpc-client-recv-fragment"},{"source":"disclosure@vulncheck.com","tags":["Exploit","Mitigation","Vendor Advisory"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q82v-5wjg-6h57"},{"source":"disclosure@vulncheck.com","tags":["Third Party Advisory"],"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-heap-buffer-overflow-via-rpc-client-recv-fragment"}],"remediation":[],"revision":"c179d4064b77d80c5d658813c998f47f35a5373466d27628f8f774a24a23de8b","sources":[{"modifiedAt":1793806406687,"name":"CNA: VulnCheck","retrievedAt":1793808641837,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121964"},{"modifiedAt":1793815300533,"name":"NVD","retrievedAt":1793816717726,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121964"}],"ssvc":null,"status":"published","title":"FreeRDP before 3.32.2 Heap Buffer Overflow via rpc_client_recv_fragment","updatedAt":1793816717726}