CVE-2026-73108 — RustDesk < 1.4.7 Uncontrolled Memory Allocation DoS via BytesCodec
RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length en…
Published: 2026-08-26 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7