{"id":"CVE-2026-73108","revision":"75e6dbfcd5cf44949547e4d83f025f9a","records":[{"revision":"75e6dbfcd5cf44949547e4d83f025f9a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73108","aliases":[],"title":"RustDesk < 1.4.7 Uncontrolled Memory Allocation DoS via BytesCodec","description":"RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length encoded in a four-byte frame header and reserves that amount before receiving the payload. A crafted header can request up to 1,073,741,823 bytes of capacity, allowing unauthenticated attackers to use concurrent TCP connections to cause memory exhaustion and denial of service. The fix caps header-triggered speculative preallocation at 256 KiB.","state":0,"publishedAt":"2026-08-26T13:00:29.283+00:00","modifiedAt":"2026-10-01T15:20:30.744+00:00","affected":[{"ecosystem":"Vendor product","name":"rustdesk","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"rustdesk\",\n                    \"product\": \"rustdesk\",\n                    \"packageURL\": \"pkg:github/rustdesk/rustdesk\",\n                    \"repo\": \"https://github.com/rustdesk/rustdesk\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.4.7\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/rustdesk/rustdesk/releases/tag/1.4.7","https://github.com/rustdesk/hbb_common/commit/547da54b4ee58eed47163fbd47edb4639e3d88de","https://github.com/rustdesk/rustdesk/commit/518296f2570d107ad416f29ade5fcce3177f4115","https://www.vulncheck.com/advisories/rustdesk-uncontrolled-memory-allocation-dos-via-bytescodec"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73108","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73108","identifiers":["CVE-2026-73108"]},"retained":false,"historicalAffected":[]}],"coverage":[]}