CVE-2026-27476

CRITICAL
2026-02-19 [email protected]
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:03 vuln.today
CVE Published
Feb 19, 2026 - 21:18 nvd
CRITICAL 9.8

Tags

Command Injection

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.

Analysis

Command injection in RustFly 2.0.0 via hex-encoded UDP instructions on port 5005. The remote UI control mechanism accepts and executes commands without validation.

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Remediation

Within 24 hours: Identify and inventory all RustFly 2.0.0 instances across infrastructure; isolate systems running this version from production networks where feasible. Within 7 days: Implement UDP port 5005 network segmentation/filtering at perimeter and internal firewalls to restrict access to trusted administrative sources only; enable enhanced monitoring and logging on affected systems for command injection attempts. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.4
CVSS: +49
POC: 0

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CVE-2026-27476 vulnerability details – vuln.today
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