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10.0 — CRITICAL

A Vulnerability in SimpleHelp Could Allow for Authentication Bypass

📅 16 June 2026 at 19:23 UTC📰 CIS AdvisoriesView original source ↗

A vulnerability has been discovered in SimpleHelp, which could allow for authentication bypass. SimpleHelp is a self-hosted remote support, access, and monitoring software used by IT teams, managed service providers (MSPs), and helpdesks. It enables technicians to securely connect to, troubleshoot, and manage client computers and servers. Successful exploitation of the vulnerability could allow unauthenticated attackers to create a new “Technician” account and use it to remote into managed endpoints, execute scripts, install programs; or view, change, or delete data.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A vulnerability in SimpleHelp allows for authentication bypass, potentially enabling unauthenticated attackers to create new 'Technician' accounts and gain full access to managed endpoints.

⚙️Technical Details
CVEs
CVE-2026-48558
Affected Systems
SimpleHelp versions prior to v5.5.16 (stable) and pre-release v6.0 RC 2
Attack Vectors
NETWORK
💥Impact Assessment
Severity: HIGH
🛡️Recommended Actions
1Apply appropriate updates provided by SimpleHelp or other vendors to vulnerable systems immediately after testing.
2Establish and maintain a documented vulnerability management process for enterprise assets.
3Remediate detected vulnerabilities in software through processes and tooling on a monthly, or more frequent, basis.
📦Affected Products
SimpleHelp
🔐NVD Verified DataVERIFIED
CVE-2026-48558 ↗CVSS 10 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-347

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