Public mode

No access to your tenant or devices. Every item links to its source. What this means

CVE-2026-47116

LTSecurity LTK3500SF Hard-coded Credentials via Telnet/SSH

CVSS 4.0 9.2 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-47116

Published

LTSecurity LTK3500SF contains a hard-coded credentials vulnerability where the root and guest account passwords are stored in /etc/shadow as weak hashes recoverable with dictionary-based cracking tools. The recovered credentials authenticate against the device's Telnet and SSH services and grant root-level access to the operating system. These services are not confirmed to start automatically at boot, so exploitation requires Telnet or SSH to be running, whether enabled by the device configuration or started manually.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-47116

Published

LTK3500SF

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "vendor": "LTSecurity",
                    "product": "LTK3500SF",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "AC3F_V1.1.0_build191121",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON