---
id: CVE-2026-82486
title: A vulnerability was found in SiteServer SSCMS 7.4.0
summary: >-
  A vulnerability was found in SiteServer SSCMS 7.4.0. Affected by this issue is
  some unknown functionality of the component Agent Installation Workflow.
  Performing a manipulation of the argument SecurityKey results in improper
  access cont…
severity: medium
cvss: 5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-266
  - CWE-284
published: '2026-08-30'
updated: '2026-08-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82486'
references:
  - url: 'https://github.com/siteserver/cms/issues/3898'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-82486'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/888366'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/397036'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/397036/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-08-30T17:55:39.623Z'
epss: 0.00328
epssPercentile: 0.2322
---

## Overview

A vulnerability was found in SiteServer SSCMS 7.4.0. Affected by this issue is some unknown functionality of the component Agent Installation Workflow. Performing a manipulation of the argument SecurityKey results in improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitation is known to be difficult. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.