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 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.
CVE-2026-73108
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-73108
rustdesk
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/rustdesk/rustdesk",
"vendor": "rustdesk",
"product": "rustdesk",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.4.7",
"versionType": "semver"
}
],
"packageURL": "pkg:github/rustdesk/rustdesk",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-73108
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #5472 · Revision 1
- Added to Heist Feed
- Publisher date