GoAnywhere MFT - RCE (CVE-2023-0669)

CVE-2023-0669 is a pre-authentication command injection vulnerability in Fortra GoAnywhere MFT, stemming from unsafe deserialization in the License Response Servlet. This flaw allows remote attackers to execute arbitrary commands on the affected system before authentication, potentially leading to full system compromise.

CrowdSec has been tracking this vulnerability and its exploits since 25th of September 2025.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2023-0669 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning. CrowdSec network telemetry also shows that exploitation of CVE-2023-0669 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.

Attackers exploit the /goanywhere/lic/accept endpoint by sending specially crafted POST requests to trigger remote code execution via unsafe deserialization in Fortra GoAnywhere MFT.