Progress Patches Critical MOVEit Automation Bug Enabling Authentication Bypass (Updated)

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Progress Software has patched a critical authentication bypass flaw in MOVEit Automation (CVE‑2026‑4670, CVSS 9.8) that allows unauthenticated remote access to the system. Immediate upgrading to the fixed versions is the only remediation.

 What the vulnerability is

The primary issue, CVE‑2026‑4670, is an authentication bypass in MOVEit Automation’s backend command port interfaces. An attacker with network access can:

  • Bypass authentication entirely

  • Gain unauthorized access

  • Potentially obtain administrative control

  • Access or exfiltrate sensitive data

This is a low‑complexity, no‑user‑interaction exploit path.

A second flaw, CVE‑2026‑5174 (CVSS 7.7), allows privilege escalation via improper input validation. Attackers can chain both vulnerabilities for full system compromise.

Affected versions

All MOVEit Automation builds before the following are vulnerable:

  • 2025.1.5

  • 2025.0.9

  • 2024.1.8

Anything older than these versions is exploitable.

Required action (no workarounds exist)

Progress is explicit:

Upgrading to a patched release using the full installer is the only way to remediate this issue. There will be an outage during the upgrade.

There are no mitigations, no configuration changes, and no firewall rules that fully eliminate the risk.

Why this matters

MOVEit Automation is widely deployed in enterprise and government environments, and MFT platforms have a history of being targeted by ransomware groups (e.g., Cl0p’s 2023 MOVEit Transfer mass‑exploitation campaign). While Progress has not yet confirmed in‑the‑wild exploitation, the exposure is significant:

  • Over 1,400 MOVEit Automation instances are internet‑facing

  • Several belong to U.S. state and local government agencies

Given the severity and past exploitation patterns, this should be treated as urgent.

 Indicators & symptoms

Progress notes that exploitation may manifest as:

  • Unexpected privilege escalation

  • Unauthorized access events

  • Anomalous activity in MOVEit Automation audit logs

 Summary table

ItemDetails
Primary CVECVE‑2026‑4670 (Auth bypass, CVSS 9.8)
Secondary CVECVE‑2026‑5174 (Privilege escalation, CVSS 7.7)
ImpactUnauthorized access, admin control, data exposure
Attack complexityLow; no user interaction
Affected versions<2025.1.5, <2025.0.9, <2024.1.8
FixUpgrade to patched versions (full installer required)
WorkaroundsNone

Next step for you

If you want, I can generate a MOVEit Automation emergency response checklist tailored for your environment (patch validation, log review, network exposure scanning, and post‑upgrade verification).



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