CVE-2026-47116
LTSecurity LTK3500SF Hard-coded Credentials via Telnet/SSH
CVSS Score
9.8
EPSS Score
0.5%
EPSS Percentile
43th
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.
| CWE | CWE-798 |
| Vendor | ltsecurity |
| Product | ltk3500sf |
| Published | Sep 22, 2026 |
| Last Updated | Sep 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
LTSecurity / LTK3500SF
AC3F_V1.1.0_build191121
References
Credits
Andrea Landriscina