CVE-2026-93338
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
The Grandstream GWN7660ELR device before firmware version 1.0.27.6 contains an information disclosure vulnerability. An unauthenticated remote attacker can query the SNMP v2c service configured with the default community string 'public' to retrieve detailed system information.
Risk Assessment
An attacker can obtain detailed information about the operating system, network configuration, processes, and other data, enabling thorough reconnaissance of the device and network infrastructure.
Recommendation
Upgrade the firmware to version 1.0.27.6 or later and change the default SNMP community strings to strong, non-public values.
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Original NVD description (English source)
Grandstream GWN7660ELR before firmware version 1.0.27.6 contains an information disclosure vulnerability that allows unauthenticated remote attackers to obtain sensitive system information by querying the SNMP v2c service configured with the default community string 'public'. Attackers can query standard MIBs over the SNMP port to retrieve operating system and kernel version, running process names and command-line arguments, network interface configuration, routing table entries, ARP table mappings, active TCP connection details, and file system paths, enabling detailed reconnaissance of the device and adjacent network infrastructure.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

