CVE-2026-27476 | RustFly 2.0.0 contains a command injection vulnerability in … | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-27476
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-02-19 19:39 UTC
Published: 2026-02-19 20:43 UTC
Last updated: 2026-02-20 20:03 UTC
Primary CWE: CWE-78
Improper Neutralization of Special Elements used in an OS Co…
Vendor / Product: Bixat / RustFly
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Bixat	RustFly	—	2.0.0

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	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

References (2)

PacketStorm-215819 https://packetstorm.news/files/id/215819/
VulnCheck Advisory: RustFly 2.0.0 Command Injection via UDP Remote Control https://www.vulncheck.com/advisories/rustfly-command-injection-via-udp-remote-control