TLS Version 1.1 Protocol Detection

info Nessus Plugin ID 121010
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote service encrypts traffic using an older version of TLS.


The remote service accepts connections encrypted using TLS 1.1.
TLS 1.1 lacks support for current and recommended cipher suites.
Ciphers that support encryption before MAC computation, and authenticated encryption modes such as GCM cannot be used with TLS 1.1

As of March 31, 2020, Endpoints that are not enabled for TLS 1.2 and higher will no longer function properly with major web browsers and major vendors.


Enable support for TLS 1.2 and/or 1.3, and disable support for TLS 1.1.

See Also

Plugin Details

Severity: Info

ID: 121010

File Name: tls11_detection.nasl

Version: 1.9

Type: remote

Published: 1/8/2019

Updated: 8/7/2020

Dependencies: ssl_supported_ciphers.nasl

Asset Inventory: true

Vulnerability Information

Required KB Items: SSL/Supported