OpenSSL security advisory (AV26-572)

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        <div><p><strong>Serial number:</strong> AV26-572<br /><strong>Date:</strong> June&nbsp;10, 2026</p>

On June 9, 2026, OpenSSL published security advisories to address vulnerabilities in the following product:

  • OpenSSL – versions 4.0.0 to versions prior to 4.0.1
  • OpenSSL – versions 3.6.0 to versions prior to 3.6.3
  • OpenSSL – versions 3.5.0 to versions prior to 3.5.7
  • OpenSSL – versions 3.4.0 to versions prior to 3.4.6
  • OpenSSL – versions 3.0.0 to versions prior to 3.0.21
  • OpenSSL – versions 1.1.1 to versions prior to 1.1.1zh
  • OpenSSL – versions 1.0.2 to versions prior to 1.0.2zq

The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary updates.

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Article Link: OpenSSL security advisory (AV26-572) - Canadian Centre for Cyber Security