CVE-2026-3356: Anritsu Remote Spectrum Monitor MS27100A

Critical severity, CVSS 9.3. EPSS: 0.6% chance of exploitation in the next 30 days.

The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error.

Affected products

• Anritsu Remote Spectrum Monitor MS27100A: any version
• Anritsu Remote Spectrum Monitor MS27101A: any version
• Anritsu Remote Spectrum Monitor MS27102A: any version
• Anritsu Remote Spectrum Monitor MS27103A: any version

Published 2026-03-31. Last modified 2026-07-24.