What’s Vulnerable › Vulnerabilities

CVE-2026-3356: Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-31 · updated 2026-07-24
• Weakness: CWE-306

Description

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: all versions
• Anritsu Remote Spectrum Monitor MS27101A: all versions
• Anritsu Remote Spectrum Monitor MS27102A: all versions
• Anritsu Remote Spectrum Monitor MS27103A: all versions

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01

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