Announced 24 July 2019

Score: Critical

Several security issues affect the Firefox ESR web browser on

  • IGEL OS 11
  • IGEL OS 10
  • IGEL Linux v5


Many vulnerabilities have been discovered in Firefox ESR, which Mozilla has summarized in the following Mozilla Foundation Security Advisories (MFSAs): MFSA-2019-22, MFSA-2019-19, MFSA- 2019-18, MFSA-2019-08, MFSA-2019-05 and MFSA-2019-02. Among these are vulnerabilities such as a sandbox escape, a script injection vulnerability, privilege escalation and some critical memory management weaknesses.

Update Instructions

  • IGEL OS 11: Update to IGEL OS 11.01.130 or newer.
  • IGEL OS 10: Update to IGEL OS 10.06.110 or newer.