MOVEit Automation CVE-2026-4670

No special conditions-remote unauthenticated exploitation against default configurations of MOVEit Automation. The CVSS vector AV:N/AC:L/PR:N/UI:N confirms attackers need only network connectivity to the MOVEit Automation web interface or API endpoints. No user interaction, authentication credentials, or non-default configuration settings are required. Exploitation is limited only by network accessibility-if the MOVEit Automation instance is reachable by the attacker (internet-facing, VPN-accessible, or from compromised internal networks), the vulnerability is exploitable. The authentication bypass nature means even instances with strong password policies, multi-factor authentication configurations, or account lockout mechanisms are vulnerable, as the flaw circumvents these controls entirely.

Real-world risk is critically high based on convergent threat indicators. CVSS 9.8 with vector AV:N/AC:L/PR:N/UI:N indicates this is remotely exploitable over the network with low complexity, requiring no authentication or user interaction-the most severe attack profile possible. The scope remains unchanged (S:U) but all CIA triad elements are highly impacted (C:H/I:H/A:H), meaning successful exploitation grants attackers comprehensive system access equivalent to legitimate authenticated users. MOVEit products have been targeted in high-profile ransomware campaigns and supply chain attacks historically, making any critical vulnerability in this product line a likely target for sophisticated threat actors. While no public exploit or CISA KEV listing exists at time of analysis, the authentication bypass nature combined with network accessibility creates conditions for rapid weaponization. The low attack complexity means exploitation does not require specialized knowledge or race conditions. Organizations running MOVEit Automation in internet-facing configurations face immediate risk. The availability of vendor patches across all affected version branches indicates Progress Software assessed this as requiring urgent remediation. Priority should be highest for MOVEit instances exposed to untrusted networks or handling regulated data, though even internal deployments face risk from lateral movement scenarios.

Remote attacker identifies internet-facing MOVEit Automation instance through reconnaissance (Shodan, certificate transparency logs, or targeted scanning). Attacker sends specially crafted authentication requests exploiting the CWE-305 bypass weakness, circumventing normal credential validation without requiring valid usernames or passwords. Successfully authenticated as a privileged user, attacker accesses sensitive file transfers, exfiltrates confidential business documents and regulated data, modifies automation workflows to inject malicious payloads into downstream systems, or establishes persistent backdoor access for ransomware deployment or supply chain compromise.