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Public proof of concept

CVE-2026-27476

RustFly 2.0.0 Command Injection via UDP Remote Control

A public proof of concept exists; no exploitation attested.

  • Published2026-02-19
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-02-1921:18CVE publishedNVD

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Bixat RustFly
    Affected
    • = 2.0.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-19

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-27476 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-02-20
  • CNACVSS 4.09.3known since 2026-10-23
  • CNACVSS 3.19.8known since 2026-10-23
  • CNAweakness (CWE)CWE-78known since 2026-10-23
  • FIRST EPSSEPSS score3.0 %2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-02-19
Last Modified
2026-06-17
NVD status
Deferred
GitHub Advisory
GHSA-2fw7-qxr6-mwq7

Frequently asked questions

What is CVE-2026-27476?

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.

Is CVE-2026-27476 actively exploited?

A proof-of-concept exploit exists for CVE-2026-27476, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-27476?

CVE-2026-27476 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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