CVE-2026-27476CWE-78

RustFly 2.0.0 Command Injection via UDP Remote Control

Critical · published February 19, 2026

CVSS v4.0
9.3
EPSS
3%
Percentile
88.5
In the wild
Unconfirmed
What it is

RustFly 2.0.0 contains a command injection vulnerability in its remote UI control mechanism that accepts hex-encoded instructions over UDP port 5005 without proper sanitization. Attackers can send crafted hex-encoded payloads containing system commands to execute arbitrary operations on the target system, including reverse shell establishment and command execution.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.03316 · 88.5th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-02-19T20:43Z
EPSS history
Timeline
  • 19 FEB 20:43Z
    RustFly 2.0.0 Command Injection via UDP Remote Control
    cvelistv5