CVE-2023-0669

HIGH KEV RANSOMWARE NUCLEI

Fortra GoAnywhere MFT Unsafe Deserialization RCE

Title source: metasploit
STIX 2.1

Exploitation Summary

CVE-2023-0669 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added February 10, 2023, with confirmed use in ransomware campaigns. EIP tracks 7 public exploits from researchers including Youssef Muhammad, 0xf4n9x, Avento, including a Metasploit module exploits/multi/http/fortra_goanywhere_rce_cve_2023_0669. A Nuclei detection template is also available.

AI-analyzed exploit summary This Java-based helper tool encrypts a serialized payload generated by ysoserial to exploit CVE-2023-0669, a deserialization vulnerability in GoAnywhere Encryption Helper. It supports two encryption versions and outputs a Base64-encoded payload for RCE.

Description

Fortra (formerly, HelpSystems) GoAnywhere MFT suffers from a pre-authentication command injection vulnerability in the License Response Servlet due to deserializing an arbitrary attacker-controlled object. This issue was patched in version 7.1.2.

Exploits (7)

exploitdb WORKING POC
by Youssef Muhammad · javawebappsjava
https://www.exploit-db.com/exploits/51339

This Java-based helper tool encrypts a serialized payload generated by ysoserial to exploit CVE-2023-0669, a deserialization vulnerability in GoAnywhere Encryption Helper. It supports two encryption versions and outputs a Base64-encoded payload for RCE.

Classification
Working Poc 95%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: GoAnywhere Encryption Helper > 7.1.1 (Windows) / > 7.0.3 (Linux)
No auth needed
Prerequisites: ysoserial-generated payload · access to vulnerable GoAnywhere instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 103 stars
by 0xf4n9x · remote
https://github.com/0xf4n9x/CVE-2023-0669

This repository contains a functional exploit for CVE-2023-0669, a pre-authentication command injection vulnerability in GoAnywhere MFT. The exploit leverages deserialization of an attacker-controlled object via the License Response Servlet to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: GoAnywhere MFT
No auth needed
Prerequisites: Java runtime environment · Network access to the target GoAnywhere MFT instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 8 stars
by Avento · remote
https://github.com/Avento/CVE-2023-0669

This is a Python-based exploit for CVE-2023-0669, a pre-authentication deserialization vulnerability in GoAnywhere MFT. It crafts a malicious serialized object, encrypts it, and sends it to the target to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: GoAnywhere MFT versions prior to 7.1.2
No auth needed
Prerequisites: Network access to the target GoAnywhere MFT instance · Target must be running a vulnerable version (<7.1.2)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP 7 stars
by yosef0x01 · poc
https://github.com/yosef0x01/CVE-2023-0669-Analysis

This repository provides analysis and references for CVE-2023-0669, an unauthenticated RCE vulnerability in GoAnywhere. It includes a link to a vulnerable version of the software but does not contain exploit code.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: GoAnywhere (version 7.0.3 and earlier)
No auth needed
Prerequisites: Access to a vulnerable GoAnywhere instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by zakaria-laouani · poc
https://github.com/zakaria-laouani/cve-2023-0669-simulation

This repository provides a Docker-based simulation of CVE-2023-0669, a deserialization vulnerability in Fortra GoAnywhere MFT. It includes an attacker container generating a malicious payload using ysoserial, a vulnerable server container, and a listener container to confirm exploitation via a curl-based callback.

Classification
Working Poc 95%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Fortra GoAnywhere MFT (version not specified)
No auth needed
Prerequisites: Docker Engine v24 or v25 · Docker Compose v2.20+ · ysoserial-all.jar
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP
by cataliniovita · poc
https://github.com/cataliniovita/CVE-2023-0669

This repository contains only a README file describing CVE-2023-0669, a command injection vulnerability in GoAnywhere MFT. No exploit code or technical details are provided.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Theoretical
Reliability
Theoretical
Target: GoAnywhere MFT
No auth needed
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
by Ron Bowes, Frycos (Florian Hauser) · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/fortra_goanywhere_rce_cve_2023_0669.rb

This Metasploit module exploits CVE-2023-0669, an unsafe deserialization vulnerability in Fortra GoAnywhere MFT. It generates a malicious serialized Java object, encrypts it, and sends it to the target endpoint to achieve remote code execution.

Classification
Working Poc 100%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Fortra GoAnywhere MFT
No auth needed
Prerequisites: Network access to the target · Vulnerable version of Fortra GoAnywhere MFT
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Fortra GoAnywhere MFT - Remote Code Execution
HIGHVERIFIEDby rootxharsh,iamnoooob,dhiyaneshdk,pdresearch
Shodan: http.favicon.hash:1484947000 || http.favicon.hash:1484947000,1828756398,1170495932
FOFA: app="goanywhere-mft" || icon_hash=1484947000 || icon_hash=1484947000,1828756398,1170495932

Scores

CVSS v3 7.2
EPSS 0.9438
EPSS Percentile 100.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2023-02-10
VulnCheck KEV 2023-02-08
InTheWild.io 2023-02-10
ENISA EUVD EUVD-2023-0644
Ransomware Use Confirmed
CWE
CWE-502
Status published
Products (2)
fortra/goanywhere_managed_file_transfer < 7.1.2
rubygems/metasploit-framework 0RubyGems
Published Feb 06, 2023
KEV Added Feb 10, 2023
Tracked Since Feb 18, 2026