SimpleHelp security advisory (AV26-642)

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        <div><p><strong>Serial number:</strong> AV26-642<br /><strong>Date:</strong> June 30, 2026</p>

On May 26, 2026, SimpleHelp published a security update to address vulnerabilities in the following product:

  • SimpleHelp – versions 5.5.0 to versions prior to 5.5.16
  • SimpleHelp – versions 6.0 to versions prior to 6.0 RC2

On June 29, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-48558 to their Known Exploited Vulnerabilities (KEV) Database.

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary update.

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Article Link: https://cyber.gc.ca/en/alerts-advisories/simplehelp-security-advisory-av26-642