CVE-2025-27327
Router OS vulnerability - React
Critical
CVSS Score: 9.2
Published: 2026-03-16
Description
A directory traversal vulnerability in React Router OS allows attackers to access sensitive information. This affects versions prior to 3.51.3.
Affected Systems
| Vendor | React |
| Product | Router OS |
| Affected Versions | < 2.56 |
| CWE ID | CWE-20 |
Mitigation
As a workaround, use Web Application Firewall until a patch is available.
Fix Instructions
1. Update Router OS to the latest version
2. Apply vendor patch when available
3. Implement network segmentation
4. Monitor for exploitation attempts
References
Risk Assessment
CVSS: 9.2/10
| Exploit Available | Yes |
| Patch Available | Yes |
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