Is CVE-2026-3356 actively exploited?

No active exploitation of CVE-2026-3356 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3356 be exploited remotely?

Yes. CVE-2026-3356 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3356?

CVE-2026-3356 has a CVSS score of 9.3 (CRITICAL).

HOME VULNERABILITIESCVE-2026-3356

CRITICAL

CVE-2026-3356

CWE-306Published: March 31, 2026· Updated: Apr 1, 2026

9.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:17.3th

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.

NVD Source

Technical Analysis

CVE-2026-3356 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

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News & Research Mentioning CVE-2026-3356

Anviz Multiple Products

CISA Alerts· Apr 16, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to conduct reconnaissance, capture or decrypt sensitive data, alter device configurations, gain unauthorized administrative or root‑level access, execute arbitrary code, compromise credentials or communications, and ultimately obtain full control over affected devices. The following versions of Anviz Multiple Products are affected: CX2 Lite Firmware vers:all/* (CVE-2026-32648, CVE-2026-40461, CVE-2026-35682, CVE-2026-35546, CVE-2026-40066, CVE-2026-33569) CX7 Firmware vers:all/* (CVE-2026-33093, CVE-2026-35061, CVE-2026-32648, CVE-2026-40461, CVE-2026-35546, CVE-2026-40066, CVE-2026-32324, CVE-2026-31927, CVE-2026-33569) CrossChex Standard vers:all/* (CVE-2026-40 [xlite_meta score:69 src:CISA Alerts xlite_fp:1f2b0b4db0f5a75463bc932eefc2a8d26a7ff198c9437ee500e80f200e5a95dc]

Anritsu Remote Spectrum Monitor

CISA Alerts· Mar 31, 2026

View CSAF Summary Successful exploitation of this vulnerability could allow attackers with network access to alter operational settings, obtain sensitive signal data, or disrupt device availability. The following versions of Anritsu Remote Spectrum Monitor are affected: Remote Spectrum Monitor MS27100A vers:all/* (CVE-2026-3356) Remote Spectrum Monitor MS27101A vers:all/* (CVE-2026-3356) Remote Spectrum Monitor MS27102A vers:all/* (CVE-2026-3356) Remote Spectrum Monitor MS27103A vers:all/* (CVE-2026-3356) CVSS Vendor Equipment Vulnerabilities v3 9.8 Anritsu Anritsu Remote Spectrum Monitor Missing Authentication for Critical Function Background Critical Infrastructure Sectors: Communications, Defense Industrial Base, Emergency Services, Transportation [xlite_meta score:73 src:CISA Alerts xlite_fp:7ed2e74642fd0177ec8cc520dd731b3e4f2a04b0da25e515a7aeac13205f3920]