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CVE-2025-26074: OmniSync's Diagnostic Disaster: A Trivial Command Injection for the Modern Age

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OmniSync's Diagnostic Disaster: A Trivial Command Injection for the Modern Age

Vulnerability ID: CVE-2025-26074
CVSS Score: 9.8
Published: 2025-06-30

A critical OS command injection vulnerability exists in the diagnostics API endpoint of OmniSync Data Orchestrator versions 3.0.0 through 3.5.1. An unauthenticated remote attacker can inject arbitrary shell commands by manipulating the 'hostname' parameter of the '/api/v1/diagnostics/ping' endpoint. The vulnerability stems from the direct concatenation of user-supplied input into a string that is later executed by the system shell, leading to Remote Code Execution (RCE) with the privileges of the OmniSync service account.

TL;DR

A high-impact, unauthenticated RCE in OmniSync Data Orchestrator's diagnostics API. Attackers can execute shell commands by simply crafting a malicious 'hostname' in a request to the '/api/v1/diagnostics/ping' endpoint. Patch immediately or face the consequences.

⚠️ Exploit Status: WEAPONIZED

Technical Details

  • CWE ID: CWE-78
  • CWE Name: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • CVSS v3.1 Score: 9.8 (Critical)
  • Exploit Status: Weaponized

Affected Systems

  • OmniSync Data Orchestrator
  • OmniSync Data Orchestrator: >= 3.0.0, <= 3.5.1 (Fixed in: 3.5.2)

Exploit Details

  • GitHub: A fully weaponized Python exploit that provides an interactive shell.
  • Metasploit Framework: Official Metasploit module for CVE-2025-26074.

Mitigation Strategies

  • Upgrade OmniSync Data Orchestrator to version 3.5.2 or later.
  • If patching is not immediately possible, block all access to the '/api/v1/diagnostics/ping' endpoint at the network edge (WAF, Reverse Proxy, or Firewall).
  • Run the OmniSync service with the lowest possible privileges to minimize the impact of a potential compromise.
  • Implement egress filtering to block unexpected outbound connections from the OmniSync server, which can prevent reverse shells from connecting back to an attacker.

Remediation Steps:

  1. 1. Identify all instances of OmniSync Data Orchestrator in your environment.
  2. 2. Verify if they are running an affected version (3.0.0 through 3.5.1).
  3. 3. Schedule an emergency maintenance window to upgrade to version 3.5.2.
  4. 4. If unable to upgrade, immediately apply network-level blocks for the vulnerable endpoint.
  5. 5. After patching, review logs for any signs of past exploitation, such as unusual processes spawned by the OmniSync service or unexpected outbound network traffic.

References

Read the full report for CVE-2025-26074 on our website for more details including interactive diagrams and full exploit analysis.

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