Vulnerability · Published Sep 18, 2026 · Assigned by VulnCheck

CVE-2026-93338Grandstream GWN7660ELR < 1.0.27.6 Information Disclosure via SNMP Default Community String

Medium 5.3

In plain English

A medium-severity security flaw in GWN7660ELR from Grandstream Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.5%top 54.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Grandstream Networks	GWN7660ELR	0 – before 1.0.27.6

Weakness: CWE-1188 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Release Notes release-notes, patch
Firmware Download product
https://www.vulncheck.com/advisories/grandstream-gwn7660elr-information-disclosure-via-snmp-default-community-string third-party-advisory