Vulnerability · Published Mar 31, 2026 · Assigned by icscert
CVE-2026-3356Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor
Critical 9.3
In plain English
A critical-severity missing authentication in Remote Spectrum Monitor MS27100A from Anritsu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 4.0)9.3Critical
Exploit odds (30 days)0.4%top 65.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 |
Weakness: CWE-306 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01 government-resource