CVE-2026-73108 (GCVE-0-2026-73108)
Vulnerability from cvelistv5 – Published: 2026-08-26 13:00 – Updated: 2026-10-01 15:20 X_Open Source
VLAI
EPSS
VEX
Title
RustDesk < 1.4.7 Uncontrolled Memory Allocation DoS via BytesCodec
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 22:49 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/rustdesk/rustdesk/releases/tag/1.4.7 | release-notes |
| https://github.com/rustdesk/hbb_common/commit/547… | patch |
| https://github.com/rustdesk/rustdesk/commit/51829… | patch |
| https://www.vulncheck.com/advisories/rustdesk-unc… | third-party-advisory |
Impacted products
Date Public
2026-07-29 00:00
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