Detections
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ConnectWise ScreenConnect < 26.2 Improper Input Validation (CVE-2026-11596)

medium Nessus Plugin ID 321345

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Synopsis

A remote access server installed on the remote host is affected by an improper input validation vulnerability.

Description

According to its version, the ConnectWise ScreenConnect remote access software installed on the remote host is prior to 26.2. It is, therefore, affected by an improper input validation vulnerability:

 - Input validation within the Host Pass creation functionality could allow an authenticated user with Host Pass creation privileges the ability to specify a token expiration duration beyond the intended maximum when generating delegated access tokens. (CVE-2026-11596)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to ConnectWise ScreenConnect version 26.2 or later.

See Also

http://www.nessus.org/u?ff83f2cc

Plugin Details

Severity: Medium

ID: 321345

File Name: connectwise_screenconnect_CVE-2026-11596.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 6/17/2026

Updated: 6/18/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.57

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:P/I:P/A:P

CVSS Score Source: CVE-2026-11596

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:connectwise:screenconnect

Required KB Items: installed_sw/ConnectWise ScreenConnect

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2026

Vulnerability Publication Date: 6/10/2026

Reference Information

CVE: CVE-2026-11596